The Power of Information

National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Methyl methacrylate


Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.

Methyl methacrylate is a manufactured chemical used in the industrial production of resins and plastics.

 
Detected
Found above
health guidelines
Found above
legal limit
States
2
-
-
Water utilities
3
-
-
People Served
20,150
-
-

Health Concerns for Methyl methacrylate:


Methyl methacrylate Exposure by State

Water utilities in 2 states have reported detecting Methyl methacrylate in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Methyl methacrylate contamination
SystemsPopulation
New Jersey114,000
Texas26,150
Total320,150

The Most Polluted Communities

3 water utilities reported detecting Methyl methacrylate in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Methyl methacrylate level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Redland Wsc
Lufkin, TX
2,7901 of 31.5 ppb
(0 to 4.5 ppb)
2South River W Dept
South River, NJ
14,0001 of 30.83 ppb
(0 to 2.5 ppb)
3Mustang Wsc
Aubrey, TX
3,3601 of 40.21 ppb
(0 to 0.85 ppb)

Health Based Limits for Methyl methacrylate

StandardDescriptionLevel
Health-Based Screening LevelA benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey.10000 ppb

Testing Summary for Methyl methacrylate

Are tests routinely required for Methyl methacrylate by federal law?No
Water suppliers reporting tests for Methyl methacrylate (2004-2009):3,164 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.4 per year

Allergies/immunotoxicity

Type of concern: Reference:
Human immune and respiratory toxicant or allergen - strong evidence Association of Occupational and Environmental Clinics
Limited evidence of immune system toxicity or allergies European Union - Classification & Labelling
Limited evidence of immune system toxicity or allergies European Economic Community, 1987
Limited evidence of immune system toxicity or allergies National Library of Medicine HazMap

Organ system toxicity (non-reproductive)

Type of concern: Reference:
Known human lung and skin toxicant European Union - Classification & Labelling
Known human respiratory toxicant EPA Hazardous Air Pollutants
Limited evidence of sense organ toxicity European Economic Community
Limited evidence of respiratory toxicity US EPA, Air Risk Information Support Center, 2003
One or more animal studies show effects at moderate doses (low dose studies may be unavailable for this ingredient) EPA Categorized List of Inert Pesticide Ingredients
One or more animal studies show classified as toxic effects at moderate doses (low dose studies may be unavailable for this ingredient) EPA Toxic Release Inventory PBTs
One or more animal studies show gastrointestinal effects at high doses (low dose studies may be unavailable for this ingredient) RTECS®- Archives des Maladies Professionnelles de Medecine du Travail et de Securite Sociale 1971
One or more animal studies show liver effects at high doses (low dose studies may be unavailable for this ingredient) RTECS®- Archives des Maladies Professionnelles de Medecine du Travail et de Securite Sociale 1971
One or more animal studies show sense organ effects at high doses (low dose studies may be unavailable for this ingredient) RTECS®- Industrial Medicine 1945
Classified as not expected to be potentially toxic or harmful Environment Canada Domestic Substance List
Classified as a low human health priority Environment Canada Domestic Substance List

Multiple, additive exposure sources

Type of concern: Reference:
Used in food or as an additive with limited or no toxicity information available FDA Everything Added to Food

Developmental/reproductive toxicity

Type of concern: Reference:
Limited evidence of developmental toxicity US EPA, 9204
Limited evidence of reproductive toxicity US EPA, 9204

Irritation (skin, eyes, or lungs)

Type of concern: Reference:
Classified as irritant European Union - Classification & Labelling
Limited evidence of skin irritation National Library of Medicine HazMap
One or more animal studies show skin irritation at high doses RTECS®- Journal of Industrial Hygiene and Toxicology 1941

Cancer

Type of concern: Reference:
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Biologicheskii Zhurnal Armenii 1974
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Mutation Research 1989
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Environmental Mutagenesis 1986
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- Environmental and Molecular Mutagenesis 1988
One or more in vitro tests on mammalian cells show positive mutation results RTECS®- National Toxicology Program Technical Report Series 1986
One or more in vitro tests non-mammalian cells show positive mutation results RTECS®- Journal of Bone and Joint Surgery, American Volume 1979
One or more animal studies show tumor formation at high doses RTECS®- Clinical Orthopaedics and Related Research 1972
Cancer - not classifiable/not likely to be human carcinogen EPA Integrated Risk Information System (IRIS)
Cancer - not classifiable/not likely to be human carcinogen Int'l Agency for Research on Cancer (IARC) - Carcinogens

Neurotoxicity

Type of concern: Reference:
One or more animal studies show brain, nervous system, or behavioral effect effects at high doses RTECS®- Industrial Health 1989

Occupational hazards

Type of concern: Reference:
Allowed workplace exposures restricted to high doses RTECS®- TLV/BEI,2006
Allowed workplace exposures restricted to high doses RTECS®- MSHA STANDARD-air: 3,168,1971
Allowed workplace exposures restricted to high doses RTECS®- OSHA PEL (Gen Indu): 29,1910 1994
Allowed workplace exposures restricted to high doses RTECS®- OSHA PEL (Construc): 29,1926 1994
Allowed workplace exposures restricted to high doses RTECS®- OSHA PEL (Shipyard): 29,1915 1993
Allowed workplace exposures restricted to high doses RTECS®- OSHA PEL (Fed Cont): 41,50-204 1994
Allowed workplace exposures restricted to high doses RTECS®- TLV/BEI,2007

Biochemical or cellular level changes

Type of concern: Reference:
One or more animal studies show biochemical changes at high doses where the human health implications are not yet well understood RTECS®- Industrial Health 1989

Miscellaneous

Type of concern: Reference:
Occupational hazards related to handling European Union - Classification & Labelling

Persistence and bioaccumulation

Type of concern: Reference:
Not suspected to be persistent Environment Canada Domestic Substance List
Not suspected to be bioaccumulative Environment Canada Domestic Substance List

Ecotoxicology

Type of concern: Reference:
Not suspected to be an environmental toxin Environment Canada Domestic Substance List



Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
European Union - Classification & LabellingMETHYL METHACRYLATE•Highly flammable
•Highly flammable
•Irritant (eyes, skin, or lungs)
•Irritating to respiratory system and skin
•May cause sensitization by skin contact
Association of Occupational and Environmental ClinicsMETHYL METHACRYLATE• Asthmagen sensitizer
Canada - Prohibited and Restricted Cosmetics IngredientsMETHYL METHACRYLATE MONOMER•Prohibited from use in Canadian cosmetics
FDA Everything Added to FoodMETHYL METHACRYLATE• There is reported use of the substance, but it has not yet been assigned for toxicology literature search.
Environment Canada Domestic Substance List2-PROPENOIC ACID, 2-METHYL-, METHYL ESTER•This chemical was NOT flagged by CEPA for further attention. The chemical was flagged for as a low human health priority.
EPA Integrated Risk Information System (IRIS)METHYL METHACRYLATE•Group E: Evidence of non-carcinogenicity for humans (EPA classification)
EPA Integrated Risk Information System (IRIS)METHYL METHACRYLATE•Not likely to be carcinogenic in humans (EPA classification)
EPA Hazardous Air PollutantsMETHYL METHACRYLATE•Hazardous air pollutant under Clean Air Act
National Library of Medicine HazMapMETHYL METHACRYLATE•Asthma - Reversible bronchoconstriction (narrowing of bronchioles) initiated by the inhalation of irritating or allergenic agents: Yes;
•Skin Sensitizer - An agent that can induce an allergic reaction in the skin or lungs: Yes;
•Dermatotoxin: Skin Burns;
•Restricted - Regulations that have banned or restricted the use of the agent: In the mid-1970s it was banned by the FDA for use in nail preparations. It was replaced by ethyl methacrylate which also caused sensitization. [Marks, p. 181-2];
•PEL (OSHA) - Permissible exposure limit (OSHA): 100 ppm;
•STEL (ACGIH) - Short-term exposure limits (ACGIH): 100 ppm;
•LC50 - Lethal concentration in 50% of animals tested: 7115 ppm;
•TLV (ACGIH) - Threshold limit value (ACGIH): 50 ppm;FL:
Int'l Agency for Research on Cancer (IARC) - CarcinogensMETHYL METHACRYLATE•IARC Group 3 (no cancer link)
International Fragrance Association Codes & StandardsMETHYL METHACRYLATE•Fragrance unsafe for use in cosmetics
International Fragrance Association Codes & StandardsMETHYL METHACRYLATE•Fragrance unsafe for use in cosmetics
International Fragrance Association Codes & Standards#53 METHYL METHACRYLATE•Fragrance unsafe for use in cosmetics
International Fragrance Association Codes & StandardsOTHER MATERIALS•Fragrance unsafe for use in cosmetics
International Fragrance Association Codes & StandardsOTHER MATERIALS (26 ENTRIES)•Fragrance unsafe for use in cosmetics
EPA Categorized List of Inert Pesticide IngredientsMETHYL METHACRYLATE•Pesticide inerts: potentially toxic, testing priority, according to EPA (Environmental Protection Agency)
EPA Toxic Release Inventory PBTsMETHYL ESTER2PROPENOIC ACID, 2METHYL•Toxic, U.S. Environmental Protection Agency Toxics Release Inventory programs
European Economic CommunityMETHYL METHACRYLATE•Skin or sense organ toxicity hazards: suspected
European Economic Community, 1987METHYL METHACRYLATE•Immunotoxicity hazards: suspected
US EPA, Air Risk Information Support Center, 2003METHYL METHACRYLATE•Respiratory toxicity hazards: suspected
US EPA, 9204METHYL METHACRYLATE•Developmental toxicity hazards: suspected
US EPA, 9204METHYL METHACRYLATE•Reproductive toxicity hazards: suspected
RTECS®- TLV/BEI,2006METHYL METHACRYLATE• occupationally related - ACGIH TLV (human TWA)
RTECS®- TLV/BEI,2007METHYL METHACRYLATE• occupationally related - ACGIH TLV (human TWA)
RTECS®- Archives des Maladies Professionnelles de Medecine du Travail et de Securite Sociale 1971METHYL METHACRYLATE• liver - Other changes (rat TDLo)
• gastrointestinal - Ulceration or bleeding from stomach (rat TDLo)
RTECS®- Biologicheskii Zhurnal Armenii 1974METHYL METHACRYLATE• mutagenic - Positive mutation assay: Cytogenetic Analysis (rat ihl)
RTECS®- Biologicheskii Zhurnal Armenii 1974METHYL METHACRYLATE• mutagenic - Positive mutation assay: Cytogenetic Analysis (rat ihl)
RTECS®- Clinical Orthopaedics and Related Research 1972METHYL METHACRYLATE• cancer - Tumors at site of application (rat TDLo)
RTECS®- Environmental and Molecular Mutagenesis 1988METHYL METHACRYLATE• mutagenic - Positive mutation assay: Cytogenetic Analysis (mouse lym)
RTECS®- Environmental and Molecular Mutagenesis 1988METHYL METHACRYLATE• mutagenic - Positive mutation assay: Cytogenetic Analysis (mouse lym)
RTECS®- Environmental Mutagenesis 1986METHYL METHACRYLATE• mutagenic - Positive mutation assay: Mutation in Micro-organism (mouse lym)
RTECS®- Industrial Health 1989METHYL METHACRYLATE• biochemical - Lipids, including transport (rat TDLo)
• brain, nervous system, or behavioral effect - Somnolence (general depressed activity) (rat TDLo)
• brain, nervous system, or behavioral effect - Structural change in nerve or sheath (rat TDLo)
RTECS®- Industrial Medicine 1945METHYL METHACRYLATE• sense organ - Primary eye irritant (rabbit )
RTECS®- Industrial Medicine 1945METHYL METHACRYLATE• sense organ - Primary eye irritant (rabbit )
RTECS®- Journal of Bone and Joint Surgery, American Volume 1979METHYL METHACRYLATE• mutagenic - Positive mutation assay: Mutation in Micro-organism (Salmonella typhimurium )
RTECS®- Journal of Bone and Joint Surgery, American Volume 1979METHYL METHACRYLATE• mutagenic - Positive mutation assay: Mutation in Micro-organism (Salmonella typhimurium )
RTECS®- Journal of Industrial Hygiene and Toxicology 1941METHYL METHACRYLATE• skin - Primary skin irritant (rabbit )
RTECS®- MSHA STANDARD-air: 3,168,1971METHYL METHACRYLATE• occupationally related - MSHA STANDARD-air (human TWA)
RTECS®- Mutation Research 1989METHYL METHACRYLATE• mutagenic - Positive mutation assay: Cytogenetic Analysis (mouse lym)
• mutagenic - Positive mutation assay: Micronucleus test (mouse lym)
RTECS®- Mutation Research 1989METHYL METHACRYLATE• mutagenic - Positive mutation assay: Cytogenetic Analysis (mouse lym)
• mutagenic - Positive mutation assay: Micronucleus test (mouse lym)
RTECS®- National Toxicology Program Technical Report Series 1986METHYL METHACRYLATE• mutagenic - Positive mutation assay: Cytogenetic Analysis (hamster ovr)
• mutagenic - Positive mutation assay: Mutation in Mammalian Somatic Cells (mouse lym)
• mutagenic - Positive mutation assay: Sister Chromatid Exchange (hamster ovr)
RTECS®- OSHA PEL (Construc): 29,1926 1994METHYL METHACRYLATE• occupationally related - OSHA PEL (Construc) (human TWA)
RTECS®- OSHA PEL (Fed Cont): 41,50-204 1994METHYL METHACRYLATE• occupationally related - OSHA PEL (Fed Cont) (human TWA)
RTECS®- OSHA PEL (Gen Indu): 29,1910 1994METHYL METHACRYLATE• occupationally related - OSHA PEL (Gen Indu) (human TWA)
RTECS®- OSHA PEL (Shipyard): 29,1915 1993METHYL METHACRYLATE• occupationally related - OSHA PEL (Shipyard) (human TWA)



references

government/industry list/academic study reference
European Union - Classification & LabellingCPS&Q (Consumer Products Safety & Quality) formely known as ECB (European Chemicals Bureau). 2008. Classification and Labelling: Chemicals: Annex VI of Directive 67/548/EEC through the 31st ATP.
Association of Occupational and Environmental ClinicsAOEC (Association of Occupational and Environmental Clinics). 2009. AEOC exposures codes and asthmagen designation.
Canada - Prohibited and Restricted Cosmetics IngredientsHealth Canada. 2007. List of Prohibited and Restricted Cosmetic Ingredients. Canada's Cosmetic Ingredient Hotlist. March 2007.
FDA Everything Added to FoodFDA (U.S. Food and Drug Administration). 2008. EAFUS [Everything Added to Food]: A Food Additive Database. FDA Office of Food Safety and Applied Nutrition.
Environment Canada Domestic Substance ListEC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
EPA Integrated Risk Information System (IRIS)EPA (U.S. Environmental Protection Agency). 2008. Integrated Risk Information System (IRIS). Evidence for human carcinogenicity based on 1986-2005 guidelines.
EPA Hazardous Air PollutantsEPA (U.S. Environmental Protection Agency). 2005. Office of Air. The 112(b)1 Hazardous Air Pollutants List (as modified). Last modified: 12 Dec 2005.
National Library of Medicine HazMapNLM (National Library of Medicine). 2006. HazMap — Occupational Exposure to Hazardous Agents.
Int'l Agency for Research on Cancer (IARC) - CarcinogensIARC (International Agency for Research on Cancer). 2008. Overall Evaluations of Carcinogenicity to Humans, as evaluated in IARC Monographs Volumes 1-99 (a total of 935 agents, mixtures and exposures).
International Fragrance Association Codes & StandardsIFRA (International Fragrance Association). 2006. Codes and Standards.
EPA Categorized List of Inert Pesticide IngredientsEPA (U.S. Environmental Protection Agency). 1987 & 2005. Office of Pesticide Programs. Inert (other) Pesticide Ingredients in Pesticide Products - Categorized List of Inert (other) Pesticide Ingredients.
EPA Toxic Release Inventory PBTsEPA (U.S. Environmental Protection Agency). 1999. Toxics Release Inventory Program. PBT Chemical Rule.
Scorecard.org Toxicity InformationEuropean Economic Community. Sensitizing Substances in the EEC List of Dangerous Substances. Annex I to Council Directive 67/548/EEC. http://www.kemi.se/default_eng.cfm?page=klass_mark/klasshem_eng.htm, US EPA, Air Risk Information Support Center. Health Effects Notebook for Hazardous Air Pollutants. http://www.epa.gov/ttnatw01/hlthef/hapindex.html, A Relational Database of Hazardous Chemicals and Occupational Diseases. Browse Haz-Map by Adverse Effects http://hazmap.nlm.nih.gov/hazmapadv.html, National Institute for Occupational Safety and Health's Registry of Toxic Effects of Chemical Substances. See Environmental Defense's Suspect Hazard Identification documentation.
Scorecard.org Toxicity InformationEuropean Economic Community. Sensitizing Substances in the EEC List of Dangerous Substances. Annex I to Council Directive 67/548/EEC. http://www.kemi.se/default_eng.cfm?page=klass_mark/klasshem_eng.htm, US EPA, Air Risk Information Support Center. Health Effects Notebook for Hazardous Air Pollutants. http://www.epa.gov/ttnatw01/hlthef/hapindex.html, A Relational Database of Hazardous Chemicals and Occupational Diseases. Browse Haz-Map by Adverse Effects http://hazmap.nlm.nih.gov/hazmapadv.html, Swedish National Chemicals Inspectorate. Labelling of chemical products, Swedish regulations and general advice with regard to the classification and labelling of chemical products hazardous to health, flammables and explosives. List of Allergenic Substances. National Chemicals Inspectorate, Solna, Sweden. 1987, 1990-1992.
Scorecard.org Toxicity InformationUS EPA, Air Risk Information Support Center. Health Effects Notebook for Hazardous Air Pollutants. http://www.epa.gov/ttnatw01/hlthef/hapindex.html, A Relational Database of Hazardous Chemicals and Occupational Diseases. Browse Haz-Map by Adverse Effects http://hazmap.nlm.nih.gov/hazmapadv.html, California EPA, Office of Environmental Health Hazard Assessment. Air Toxics Hot Spots Program Risk Assessment Guidelines, Part III: Technical Support Document 'Determination of Noncancer Chronic Reference Exposure Levels'. Includes all Chronic Reference Exposure Levels (CRELs) adopted by OEHHA as of August 2003 (http://www.oehha.ca.gov/air/chronic_rels/AllChrels.html, plus draft CRELS proposed through March 2004 (http://www.oehha.ca.gov/air/chronic_rels/index.html., National Institute for Occupational Safety and Health's Registry of Toxic Effects of Chemical Substances. See Environmental Defense's Suspect Hazard Identification documentation.
Scorecard.org Toxicity InformationUS EPA. Roadmaps to Sources of Information on Chemicals Listed in the Emergency Planning Community and Community Right-to-Know Act (Also Known as SARA Title 3), Section 313 Toxic Release Inventory (for Microcomputers). (Report Number EPADFDK92040). 1991. Data file distributed in 2 diskettes by Office of Pollution, Prevention, and Toxics, Environmental Protection Agency, Washington, DC. NOTE: Datasource no longer being maintained by EPA; not currently available online.
Scorecard.org Toxicity InformationUS EPA. Roadmaps to Sources of Information on Chemicals Listed in the Emergency Planning Community and Community Right-to-Know Act (Also Known as SARA Title 3), Section 313 Toxic Release Inventory (for Microcomputers). (Report Number EPADFDK92040). 1991. Data file distributed in 2 diskettes by Office of Pollution, Prevention, and Toxics, Environmental Protection Agency, Washington, DC. NOTE: Datasource no longer being maintained by EPA; not currently available online.
RTECS®- TLV/BEI,2006RTECS®- TLV/BEI,2006
RTECS®- TLV/BEI,2007RTECS®- TLV/BEI,2007
RTECS®- Archives des Maladies Professionnelles de Medecine du Travail et de Securite Sociale 1971RTECS®- Archives des Maladies Professionnelles de Medecine du Travail et de Securite Sociale. (SPPIF, B.P.22, F-41353 Vineuil, France) V.7- 1946- 32,653,1971
RTECS®- Biologicheskii Zhurnal Armenii 1974RTECS®- Biologicheskii Zhurnal Armenii. Biological Journal of Armenia. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.19- 27(6),102,1974
RTECS®- Biologicheskii Zhurnal Armenii 1974RTECS®- Biologicheskii Zhurnal Armenii. Biological Journal of Armenia. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.19- 1966- 27(6),102,1974
RTECS®- Clinical Orthopaedics and Related Research 1972RTECS®- Clinical Orthopaedics and Related Research. (Lippincott/Harper, Journal Fulfillment Dept., 2350 Virginia Ave., Hagerstown, MD 21740) No.26- 1963- 88,223,1972
RTECS®- Environmental and Molecular Mutagenesis 1988RTECS®- Environmental and Molecular Mutagenesis. (Alan R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.10- 1987- 11,49,1988
RTECS®- Environmental and Molecular Mutagenesis 1988RTECS®- Environmental and Molecular Mutagenesis. (Alan R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.10- 11,49,1988
RTECS®- Environmental Mutagenesis 1986RTECS®- Environmental Mutagenesis. (New York, NY) V.1-9, 1979-87. For publisher information, see EMMUEG. 8(Suppl 6),4,1986
RTECS®- Industrial Health 1989RTECS®- Industrial Health. (National Institute of Industrial Health, 6-21-1 Nagao, Tama-ku, Kawasaki, 213 Japan) V.1- 1963- 27,121,1989
RTECS®- Industrial Medicine 1945RTECS®- Industrial Medicine. (Chicago, IL) V.1-18, 1932-49. For publisher information, see IOHSA5. 14,292,1945
RTECS®- Industrial Medicine 1945RTECS®- Industrial Medicine. (Chicago, IL) V.1-18, 1932-49. For publisher information, see IOHSA5. 14,292,1945
RTECS®- Journal of Bone and Joint Surgery, American Volume 1979RTECS®- Journal of Bone and Joint Surgery, American Volume. (10 Shattuck St., Boston, MA 02115) V.30- 61A,1203,1979
RTECS®- Journal of Bone and Joint Surgery, American Volume 1979RTECS®- Journal of Bone and Joint Surgery, American Volume. (10 Shattuck St., Boston, MA 02115) V.30- -1948 61A,1203,1979
RTECS®- Journal of Industrial Hygiene and Toxicology 1941RTECS®- Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. 23,343,1941
RTECS®- MSHA STANDARD-air: 3,168,1971RTECS®- MSHA STANDARD-air: 3,168,1971
RTECS®- Mutation Research 1989RTECS®- Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 222,191,1989
RTECS®- Mutation Research 1989RTECS®- Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- -1964 222,191,1989
RTECS®- National Toxicology Program Technical Report Series 1986RTECS®- National Toxicology Program Technical Report Series. (Research Triangle Park, NC 27709) No.206- NTP-TR-314,1986
RTECS®- OSHA PEL (Construc): 29,1926 1994RTECS®- OSHA PEL (Construc): 29,1926.55,1994
RTECS®- OSHA PEL (Fed Cont): 41,50-204 1994RTECS®- OSHA PEL (Fed Cont): 41,50-204.50,1994
RTECS®- OSHA PEL (Gen Indu): 29,1910 1994RTECS®- OSHA PEL (Gen Indu): 29,1910.1000,1994
RTECS®- OSHA PEL (Shipyard): 29,1915 1993RTECS®- OSHA PEL (Shipyard): 29,1915.1000,1993

"RTECS®" is a United States trademark owned and licensed under authority of the U.S. Government, by and through MDL Information Systems, Inc.