cradle to cradle certifiedcm report construction ... · cradle to cradle certifiedcm is a...

© 2013, MBDC, LLC. CONFIDENTIAL AND PROPRIETARY For use only by Construction Specialties, Inc, MBDC, & Cradle to Cradle Products Innovation Institute Cradle to Cradle

® is a registered trademark of MBDC, LLC.

Cradle to Cradle CertifiedCM

is a certification mark licensed by Cradle to Cradle Products Innovation InstituteTM

Cradle to Cradle Certified

CM Report

Construction Specialties, Inc PediTred® G4, PediTred® LP G3, PediGrid® G1, PediMat® AA M2, Gridline® G6, and PediMat M1®

(Nylon and Polypropylene versions)

Prepared by MBDC April 2013

1001 East Market Street, Suite 200 Charlottesville, VA 22902


CM Report for PediTred® G4, PediTred® LP G3

PediGrid® G1, PediMat® AA M2, Gridline® G6, and PediMat® M1

© 2013 MBDC LLC. CONFIDENTIAL AND PROPRIETARY - For use only by Construction Specialties, Inc, MBDC, & Cradle to Cradle Products Innovation Institute

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Cradle to Cradle® is a registered trademark of MBDC

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Contents

Contents 1

Executive Summary 2

Certification Results 2

Scorecard 2 Material Health 3 Material Reutilization 7 Renewable Energy Use 7 Water Stewardship 8 Social Fairness 8

Conclusion 8

Summary 8 Recommendations 9

Appendix A: Material Health Optimization Plan 11

Appendix B: Renewable Energy Plan 12

Appendix C: Water Stewardship Principles 14

Appendix D: Social Responsibility Principles 18

Appendix E: Glossary of Terms 22

Resources and Works Cited 25





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Executive Summary

Construction Specialties, Inc is applying to have its Pedisystems Entrance Flooring Products, recertified in the Cradle to Cradle Certified

CM program by the Cradle to Cradle Products Innovation Institute under

Version 2.1.1 of the standard. As the accredited assessment body, MBDC is submitting this report for review by Cradle to Cradle Products Innovation Institute and is recommending that Construction Specialties, Inc‘s Pedisystems Entrance Flooring products be renewed as Cradle to Cradle Certified

CM

Silver for one calendar year beginning on March 31st 2013.

Certification Results

Scorecard

The lowest level achieved in any of the five categories determines the final certification level. The requirements in each category were completed at the following levels: Construction Specialties, Inc- Pedisystems Entrance Flooring Products Includes the following versions: PediTred® G4*, PediTred® LP G3*, PediGrid® G1*, PediMat® AA M2*, Grindline® G6, and PediMat® M1* *indicates product that come in polypropylene and nylon versions

Level

Category Basic Silver Gold Platinum

Material Health

Material Reutilization

Renewable Energy Use

Water Stewardship

Social Fairness

OVERALL





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Material Health

Based on the assessment of the product‘s components & ingredients for impact to human and environmental health, the product meets the requirements for at the Silver level in the Material Health category. See the table below for a summary of the Material Health assessments for each of the product‘s components. Construction Specialties has developed a plan to replace the problematic ingredients by working with suppliers to reduce and eventually eliminate ingredients of concern. See Appendix A for Construction Specialties, Inc‘s strategy for replacing problematic components. For any GREY assessed components, full data will need to be received within six months or these materials will be considered RED and recommended for phase-out.

Table 1 – Material Health Assessment Results:

COMPONENT ASSESSMENT COMMENTS

Aluminum Rails, G4, G3, G1 & M2

B Contains small amounts of moderately problematic ingredients in the overall aluminum alloy but is acceptable for use and highly recyclable

TPE Rail Hinge connector G3 & G4

C Contains small amounts of moderately problematic ingredients but is acceptable for use. Recycling can be a challenge here due to the thermoset nature of the material. This is typically downcycled.

Stainless steel pop rivets

B Contains small amounts of moderately problematic ingredients in the steel alloy but is acceptable for use. Can be recycled with similar grades of stainless steel or with general purpose steel.

EPDM 1‘ cushions, G1


Rail Carrier* C Contains small amounts of moderately problematic ingredients but it acceptable for use.

EPDM continuous cushion, M2


Carpet Strip system

C Contains two separate materials, each of which would be assessed as B, but they cannot be recycled together so they must be separated or the carpet strip will be downcycled.

*indicates material only utilized in PediMat® M1

Table 2: Offered Colors for Nylon version

Color Name Assessment Comments

Gun Metal X This material has been assessed X due to the presence an organohalogenated compound.





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Espresso

X

This material has been assessed X due to the presence of a heavy metal ladened compound.

Midnight

X This material has been assessed X due to the presence an organohalogenated compound.

Pewter

X

This material has been assessed X due to the presence of an organohalogenated compound, and a heavy metal ladened compound.

Slate

X


Graph


Aqua


Sandbar

X


Gray Fox

X


Graphite

X


Charcoal

X


Eggplant

X


Cast G.


Spruce

X


Lava

X This material has been assessed X due to the presence of an





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organohalogenated compound, and a heavy metal ladened compound.

Fern

X


Raspberry

X


Sandstone


H.Moss


Silverado

X


Indigo

X


Ash Berry X


Table 3: Offered Colors for polypropylene versions:

Color Name Assessment Comments

Midnight X This material has been assessed X due to the presence an organohalogenated compound.

Wrought Iron

C This material is acceptable for use from the Cradle to Cradle perspective.

Sandstone


Pewter

X

This material has been assessed X due to the presence an organohalogenated compound.

Slate #544

X






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Eggplant #2365 X This material has been assessed X due to the presence an organohalogenated compound.

Sandbar #322


Indigo #306

X


Graphite

C This material is acceptable for use from the Cradle to Cradle perspective

Silverado

X


Expresso

X


Tan#42

X


Olive #183


Meriot #184

Grey This material has been assessed Grey due to the inability to obtain proprietary information.

Key:

A Preferred: Biological nutrient that is renewably sourced and rapidly degradable or technical nutrient

that is fully recyclable. Little to no risk to human health and/or environmental health. (Note: This designation is applicable to program version 3.0 only)

B Preferred: Little to no risk to human health and/or environmental health.

C Acceptable: One or more moderate risks to human health and/or environmental health. Suitable for

continued use until a GREEN alternative is found.

X Problematic: One or more significant risks to human and/or environmental health; should be phased

out as quickly as possible.

G Incomplete: Either ingredient data is not complete or evaluation data is not available for one or more

criteria. Data should be completed or ingredient should be phased out of use.

BANNED Banned: This ingredient (or a chemical in this component) poses a serious risk to human and

environmental health and is not allowed in the Cradle to Cradle CertifiedCM

program.





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Material Reutilization

Construction Specialties, Inc‘s Pedisystems Entrance Flooring meet the requirements for Gold level in this category. It is comprised primarily of aluminum, steel, EPDM, and nylon/polypropylene carpet strips:

GridLine G6 is completely comprised of aluminum and therefore 100% recyclable

PediTred® G4, PediTred® LP G3, PediGrid® G1, PediMat® AA M2, and PediMat® M1 all contain either a polypropylene/nylon carpet strip:

o These carpet strips are recyclable but C/S has also implemented a take-back program (see paragraph below)

Approximately 70% of the Pedisystems products (on average) are comprised of aluminum

Steel contains an average of 30% recycled content (industrial average)

Aluminum extrusions contain 75% recycled content (post-industrial and post-consumer combined)

It is assumed that the steel and aluminum will eventually be recycled. Under these assumptions, the Pedisystems Entrance Flooring contains from 52.5-75% recycled or renewable content and are from100]% recyclable or compostable. Depending on the product size and SKU under consideration, the Material Reutilization score for the Pedisystems Entrance Flooring ranges from 84.2-91.7 based on the following formula:

2 * [% Recyclable/Compostable] + [% Recycled/Rapidly Renewable Content] * 100 3

The material reutilization scores above qualifies for the platinum level, but due to the fact that thetake-back program is only for a portion of the product, this product qualifies at the Gold level for reutilization.

"C/S Entrance Flooring Systems will take the product back to recycle and decide a course of action for any applicable freight charges or a discount for a replacement system on a case by case basis. However, we prefer to help customers refurbish existing units by offering replacement components. If the unit has reached its end of life or a renovation has made it unsuitable for use, we happily offer nationwide recycling assistance. We help the customer find the nearest local recycler to avoid the environmental consequences (added carbon footprint) from re-shipping the materials back to C/S. Specifically for carpet insert strips recycling call PCI Flortech 630-458-5760 to arrange local service"

Renewable Energy Use

Construction Specialties, Inc‘s Pedisystems Entrance Flooring products meet the requirements for the Gold level in this category. The total annual energy requirement for the manufacture of the Pedisystem Entrance Flooring products in Construction Specialties, Inc‗s Muncy, PA facility in 2012 was 487,090 kW. Construction Specialties, Inc has purchased renewable energy credits through their energy provider for 50% of electricity from non-





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renewable based resources and has also offset greenhouse gas emissions resulting from operations. Please see Appendix B for Construction Specialties, Inc‘s RECs and complete energy usage.

Water Stewardship

Construction Specialties, Inc‘s Pedisystems Entrance Flooring products meet the requirements for Gold level in this category. As part of its ―Environmental Positioning Statement‖ (Rev Date: 2/15/08), the company states that it will ―determine its water footprint at its individual operations and act to minimize any negative impact its operations may have on water ecosystems, institute effective measures to monitor water usage, and annually seek to reduce its water footprint.‖ Additionally, the Muncy plant which uses well water has installed a meter at its wellhead to measure the amount of water it draws annually. The company has also installed waterless urinals and low flush toilets in another plant location with possible installation at the Muncy facility if renovations occur.

Construction Specialties has also completed a water audit of the manufacturing facilities in Muncy, Pennsylvania. This was for another Construction Specialties Inc product but because this product is assembled at the same plant the water audit can also be utilized for the Entrance Flooring products as well. Therefore, the requirements for the gold level, under water stewardship, have been met by Construction Specialties Inc. Please see Appendix C for Water Stewardship statement, and the full water audit.

Social Fairness

Construction Specialties, Inc‘s Pedisystems Entrance Flooring products meet the requirements for Gold level in this category.

Construction Specialties, Inc has created and implemented Social Responsibility principles in line with Silver level requirements. Construction Specialties, Inc. has also completed the B-corp self audit in order to qualify for the Gold level in Social Fairness Please see Appendix D for further details.

Conclusion

Summary

Construction Specialties, Inc‘s Pedisystems Entrance Flooring products meet all Cradle to Cradle Certified

CM Silver level requirements under program version 2.1.1.

One year after the recertification date, Construction Specialties, Inc will have the option to recertify the products. The product may continue to recertify the product under Version 2.1.1. program requirements until December 31, 2014. By January 1, 2015 the product must meet the Version 3 program requirements in order to maintain the certification.





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Furthermore, this product certification does not mean the individual components are certified. Material suppliers of Construction Specialties, Inc may not use this marketing language or otherwise promote its products as certified. In order to obtain a license to use the Cradle to Cradle Certified

CM mark, a Trademark Licensing

Agreement must be executed between Construction Specialties, Inc and The Cradle to Cradle Products Innovation Institute. That document includes guidelines for appropriate use of the marks.

Recommendations

Although Construction Specialties, Inc has made many positive strides in the ecologically intelligent design of these products, there still exist opportunities for improvement, and optimization of the product is required.

In order to move towards Cradle to Cradle Certified

CM Silver level under program version 2.1.1, the

following items would need to be completed:

Material Health o Optimization of red and grey assessed materials to yellow and green.

In order to move towards Cradle to Cradle Certified

CM Silver level under program version 3, the

following items would need to be completed:

Material Health o Optimization of materials that contain carcinogens, mutagens and reproductive toxins to those that

do not contain such substances. o Collection of banned list declarations for any grey assessed materials or red assessed items with

grey ingredients.

Material Reutilization o Reutilization score - The score considers both recycled content and recyclability or compostability.

Products with a score of 50+ are eligible for the Silver level of certification.

Renewable Energy Use o The Silver level applicant will purchase or produce 5% of the energy required for final product

manufacture from renewable sources. Generally this is achieved through the purchase of renewable energy certificates (REC‘s) and carbon off-sets as appropriate. REC‘s are only applicable to purchased electricity, while carbon off-sets may be applied to any CO2 emissions source. This would apply to the energy used at the primary supplier facilities and any contract manufacturer‘s facilities. It does not apply to energy used further back in the supply chain.

Water Stewardship o The Silver level applicant will have no significant discharge permit violations in the past two years,

will characterize local and business specific water related issues and develop an action plan as needed, and perform a water audit for the manufacturing facility and any contract manufacturing facilities. These are required to achieve the Basic and Bronze levels as well as the Silver level.





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o Additionally, the Silver level applicant will characterize and assess process level chemicals related to product manufacture that are present in effluent. Alternatively, supply chain-relevant water issues for at least 20% of Tier 1 suppliers will be characterized and a positive impact strategy will be developed.

Social Responsibility o The Silver level applicant will complete both a basic self audit to assess protection of fundamental

human rights at the tier one supplier level, and demonstrate that appropriate management procedures are in place. A full social responsibility self-audit will also be completed employing UN Global Compact or B Corp tools. These are required to achieve the Basic and Bronze levels combined as well as the Silver level.

o The Silver level applicant will also choose from several additional requirements including completion of FSC certification or purchase of FSC certified inputs (other certifications may also apply), investigation and management of supply chain social issues, or active participation in innovative social projects.





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Appendix A: Material Health Optimization Plan

MBDC is currently working with Construction Specialties to optimize their X colorants. MBDC has reached out to alternative supplier, and ongoing efforts are being done to appropriately color match all colors offered.





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Appendix B: Renewable Energy Plan





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Appendix C: Water Stewardship Principles





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Appendix D: Social Responsibility Principles





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Appendix E: Glossary of Terms

ALGAE TOXICITY Several Genera and Species of Green Algae found in lakes, ponds, and streams that are responsible for aquatic oxygen balance and food sources for fish are tested for their reaction to chemical exposure. Chemicals that kill algae are considered dangerous to aquatic eco-systems due to the possible food chain effects and food source depletion. Algae Toxicity is a measure of a substance's toxicity when consumed by these various types of Algae. A common measuring tool is LC50 ("lethal concentration"), which is the concentration of a substance in the water required to kill fifty (50) percent of the algae test population. If LC50 < 10 mg/L, the substance is considered algae toxic. BIOACCUMULATION The process by which substances are stored and accumulated in the tissue or organs of humans or animals. BIOCONCENTRATION FACTOR (BCF) A measure of the tendency for a chemical to accumulate. The ratio of the concentration of a substance in a living organism (mg/kg) to the concentration of that substance in the surrounding environment (mg/l for aquatic systems). BIODEGRADATION The process by which a substance or material is broken down (or decomposed) by microorganisms and reduced to organic or inorganic molecules which can be further utilized by living systems. Biodegradation can be aerobic, if oxygen is present, or anaerobic, if no oxygen is present. BIOLOGICAL NUTRIENT A material used by living organisms or cells to carry on life processes such as growth, cell division, synthesis of carbohydrates and other complex functions. Biological Nutrients are usually carbon-based compounds that can be safely composted and return to soil. CARCINOGEN - POSSIBLE, OR SUSPECTED A known animal carcinogen, but evidence of carcinogenicity in humans is non-existent, or there is limited evidence of carcinogenicity in humans and insufficient evidence of carcinogenicity in animals (MAK 3 or TLV A3 or IARC Group 2B). CARCINOGEN - PROBABLE A known animal carcinogen, but carcinogenicity in humans has not been definitely proven (MAK 2 or TLV A2 or IARC Group 2A). CARCINOGEN - KNOWN A causal relationship has been established between exposure to the agent and human cancer (MAK 1 or TLV A1 or IARC Group 1). CAS NUMBER Chemical Abstract Service number. This number uniquely identifies each pure chemical compound. CLEARANCE TIME (CT) The CT indicates the time needed to eliminate or biodegrade a substance to a certain percentage in an organism. For example, the CT50 indicates the time needed to eliminate 50% of a certain substance, analogous to the half-life time measure t1/2. CLIMATIC RELEVANCE This is a measure of the climate-influencing characteristics of the substance. All compounds that contribute to global warming are listed here. Examples include carbon dioxide, methane, CFCs, and sulfur hexafluoride. CONTENT OF HALOGENATED ORGANIC COMPOUNDS The column in the periodic chart of the elements that begins with Fluorine contains the halogens. These elements, when combined with organic compounds, form halogenated organic compounds. Most of these compounds are toxic,





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carcinogenic, persistent, Low Profileone depleting or bioaccumulative, or form hazardous substances during production and disposal (e.g., PVC). DAPHNIA TOXICITY Water fleas of the genus Daphnia can be found in most ponds and streams. They feed upon microscopic particles of

organic matter and are in turn food for fish and other aquatic organisms. Daphnia Toxicity is a measure of a substance's toxicity when consumed by these water fleas. A common measuring tool for daphnia toxicity is EC50 ("effective concentration"), which is the concentration of a substance in the water required to immobilize 50 percent of the test animals. If EC50<10 mg/liter, the substance is named daphnia toxic. DOWNCYCLING The name for the practice of recycling a material in such a way that much of its inherent value is degraded (e.g. recycling plastic into park benches) revealing poor design of a lifecycle and the related material flows.

EFFECT CONCENTRATION 50 (EC50) The median exposure concentration (EC50) is the median concentration of a substance that causes some effect in 50 percent of the test animals. ENDOCRINE DISRUPTOR A substance that mimics, blocks, or interferes with hormones and their production, metabolism, and excretion causing malfunction of the endocrine system which can lead to malfunction of the reproductive, nervous, and immune systems. FISH TOXICITY Several Genera and Species of fish found in lakes, ponds, and streams that are part of the food chain are tested for their reaction to chemical exposure. Chemicals that kill fish are considered dangerous to aquatic eco-systems due to the possible food chain effects and food source depletion. Fish Toxicity is a measure of a substance's toxicity when consumed by these various types of fish. A common measuring tool is LC50 ("lethal concentration"), which is the concentration of a substance in the water required to kill fifty (50) percent of the fish test population. If LC50 < 10 mg/L, the substance is considered fish toxic. HALF-LIFE (T1/2) The amount of time it takes half of an initial concentration of substance to degrade in the environment. HEAVY METAL The term "Heavy Metals" is generally interpreted to include those metals from periodic table groups IIA through VIA. The semi-metallic elements: boron, arsenic, selenium, and tellurium are often included in this classification. IRRITATION OF SKIN/MUCOUS MEMBRANES For the testing of skin irritation with the standard Draize test, rabbits are used. The chemical is applied to the rabbit skin and usually kept in contact for 4 h. The degree of skin irritation is scored for erythema, eschar and edema formation and corrosive action. These dermal irritation observations are repeated at various intervals after the chemical has been removed. Mucous membrane irritation is measured in a similar manner. Site-specific mechanical responses within the respiratory tract and eyes are measured, and a chemical is classified as an irritant based on the conclusions of these tests. GLOBAL WARMING POTENTIAL A scale used to relate a compound to the CO2 equivalents to measure the potential heating effects on the atmosphere. LETHAL CONCENTRATION 50 (LC50) The inhalative median lethal concentration (LC50) is the median concentration of a substance that causes death in 50 percent of the test animals. LETHAL DOSE 50 (LD50)





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The median lethal dose (LD50) is the statistically derived median dose of a substance that can be expected to cause death in 50 percent of the test animals. MATERIAL A group of one or more chemicals that together comprise a component or input to a finished product. MUTAGEN This is a substance that may cause hereditary disorders in the offspring due to mutations in the chromosomes of the male or female reproductive cells. These mutations can be alterations in the structure or number of chromosomes, or nucleotide substitutions known as point mutations. OCTANOL-WATER PARTITIONING COEFFICIENT (Pow) A measure of the tendency of a chemical to partition between an aliphatic hydrocarbon system and an aqueous system. Often used as a predictor for bioaccumulation potential. LOW PROFILEONE DEPLETION POTENTIAL This is the measure of the Low Profileone depleting characteristics of the substance. Low Profileone depletion in the upper atmosphere leads to an increase of UV-radiation on the earth and as a result, an increase in skin cancer. CFCs are included here. PERSISTENCE This is a measure of a substance's ability to remain as a discrete chemical entity in the environment for a prolonged period of time. A common measuring tool for persistence is "half-life" (t1/2), which is the amount of time required for half of the substance to breakdown. If half-life is greater than 30 days in the air, or if half-life is greater than 50 days in soil, water, or any other media the substance is considered to be persistent. SKIN PENETRATION POTENTIAL A measure of the ability of a compound to assist in the absorption of chemicals into the skin. SENSITIZATION The ability of a substance to induce an immunologically-mediated (allergic) response. TECHNICAL NUTRIENT A material of human artifice designed to circulate within technical metabolism (industrial cycles)—forever.

TERATOGEN A substance shown to cause damage to the embryo or fetus through exposure by the mother (MAK-list: Pregnancy risk group, category A). TERATOGEN - SUSPECTED Currently available information indicates that a risk of damage to the embryo or fetus can be considered probable when the mother is exposed to this substance (MAK-list: Pregnancy risk group, category B). TOXICITY - ACUTE A measure of how poisonous or "deadly" a substance is during initial exposure. A common measuring tool for acute toxicity is LD50 ("lethal dose"), which is the dose required to kill 50 percent of the test animals. If LD50<200 mg/kg, the substance is named acutely toxic. TOXICITY - CHRONIC This is a measure of how poisonous a substance can become over time with repeated exposure. A substance may have low acute toxicity (i.e., little harmful effects from the initial exposure) but may become poisonous over time with repeated exposure. This may be due to accumulation of the substance or due to repeated minor damaging of target organs.





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Resources and Works Cited

American Conference of Governmental Industrial Hygienists. 2003 TLVs and BEIs, Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices. ACGIH Worldwide 2003.

CAL PROP 65, California Proposition 65 list of Carcinogens and Reproductive Toxins. http://www.oehha.org/prop65/prop65_list/Newlist.html

CCRIS, Carcinogenicity and mutagenicity data. (Chemical Carcinogenesis Research Information System, National Cancer Institute) http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?CCRIS

ChemID Plus, Detailed structure data by CAS number. (National Library of Medicine) http://chem.sis.nlm.nih.gov/chemidplus/setupenv.html

DART/ETIC, Developmental and Reproductive Toxicity/Environmental Teratology Information Center- Literature (bibliographic & abstract information) on developmental and reproductive toxicology. (National Library of Medicine). http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?DARTETIC.htm

Eco-Tox, Environmental toxicity database. (Environmental Protection Agency) http://www.epa.gov/ecotox

EFDB, Environmental Fate Data Base. http://esc.syrres.com/efdb.htm

EMIC, Environmental Mutagen Information Center. (bibliography and abstracts) http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?EMIC

Fisher-Acros MSDS. http://www.fishersci.ca/homepage2.nsf/(waSearch)?openagent&lang=E&DB=msds.nsf

GENE-TOX, Mutagenicity data. (Environmental Protection Agency) http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?GENETOX

Hazardous Substances Data Bank (HSDB), A comprehensive source for toxicology data for relevance to Human Health. Peer- reviewed. (National Library of Medicine). http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?HSDB

IARC (International Agency for Research on Cancer). A list of chemicals that have been evaluated and classified by IARC as to carcinogenic risk to humans. http://193.51.164.11/monoeval/grlist.html

IUCLID, International Chemical Information Database (IUCLID). 2000. (European Commission, European Chemicals Bureau) http://ecb.ei.jrc.it

List of Ozone Depleting Substances. (Environmental Protection Agency) http://www.epa.gov/ozone/ods.html

LogKOW Estimation, Environmental toxicity database. (Environmental Protection Agency) http://esc.syrres.com/interkow/kowdemo.htm

MAK List of Carcinogenic, Teratogenic, or Sensitizing Substances, Deutsche Forschungsgemeinschaft. 2000. List of MAK and BAT Values 2000: Maximum Concentrations and Biological Tolerance Values at the Workplace. Commission for the Investigation of Health Hazards if chemical Compounds in the Work Area. Report No. 36. Weinheim: Wiley-VCH.

National Library of Medicine. Hazardous Substances Data Bank. 2002. http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?HSDB

RTECS, Registry of Toxic Effects of Chemical Substances. (subscription required) http://ccinfoweb.ccohs.ca/rtecs/search.html

Sigma-Aldrich MSDS. http://www.sigma-aldrich.com/msds





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Theo Colborn‘s List of Endocrine Disruptors. http://www.ourstolenfuture.org/Basics/chemlist.htm

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