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Asbestos, chrysotile

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  • Name Asbestos, chrysotile
  • EINECSN/A
  • CAS No. 12001-29-5
  • Densityg/cm3
  • PSA188.05000
  • LogP-2.65270
  • SolubilityN/A
  • Melting Point800-850 °C
  • FormulaH4O4 Si . 1/2 H2 O . 3/2 Mg
  • Boiling Point°Cat760mmHg
  • Molecular Weight277.11236
  • Flash Point°C
  • Transport InformationN/A
  • AppearanceN/A
  • SafetyConfirmed human carcinogen producing tumors of the lung. Human mutation data reported. Poison by intraperitoneal route. Human systemic effects by inhalation: lung fibrosis, dyspnea, and cough.

    Analytical Methods:

       

    For occupational chemical analysis use NIOSH: Fibers, 7400; Asbestos Fibers, 7402.

  • Risk CodesN/A
  • Molecular Structure
    Molecular Structure of 12001-29-5 (Chrysotile (Mg3H2(SiO4)2.H2O))
  • Hazard SymbolsN/A
  • SynonymsN/A

Asbestos, chrysotile Chemical Properties

Molecular Formula: H4Mg3O9Si2
Molar mass: 277.1124 g/mol
Water solubility: Insoluble
Product categories: Fibers/Asbestos
Structure of Asbestos, chrysotile (12001-29-5):

H-Bond Donor: 3
H-Bond Acceptor: 9
Systematic Name: Trimagnesium hydroxy-trioxido-silane hydrate 
SMILES: [Mg+2].[Mg+2].[Mg+2].[O-][Si]([O-])([O-])O.[O-][Si]([O-])([O-])O.O 
InChI: InChI=1/3Mg.2HO4Si.H2O/c;;;2*1-5(2,3)4;/h;;;2*1H;1H2/q3*+2;2*-3; 
InChIKey: CWBIFDGMOSWLRQ-UHFFFAOYAE 
Std. InChI: InChI=1S/3Mg.2HO4Si.H2O/c;;;2*1-5(2,3)4;/h;;;2*1H;1H2/q3*+2;2*-3; 
Std. InChIKey: CWBIFDGMOSWLRQ-UHFFFAOYSA-N

Asbestos, chrysotile Uses

 Asbestos, chrysotile (12001-29-5) is used as a heat resistant material, in furnace bricks, cement, and brake linings.

Asbestos, chrysotile Toxicity Data With Reference

1.    

oms-hmn:fbr 10 mg/L

    MUREAV    Mutation Research. 116 (1983),369.
2.    

oms-ham:ovr 10 mg/L

    MUREAV    Mutation Research. 116 (1983),369.
3.    

ihl-man TCLo:400 mppcf/1Y-C:CAR,PUL

    AEHLAU    Archives of Environmental Health. 28 (1974),61.
4.    

ihl-hmn TCLo:2.8 fibers/cc/5Y:PUL

    ENVRAL    Environmental Research. 23 (1980),292.
5.    

ipr-rat LDLo:300 mg/kg

    AJPAA4    American Journal of Pathology. 70 (1973),291.

Asbestos, chrysotile Consensus Reports

NTP 10th Report on Carcinogens. IARC Cancer Review: Human Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 2 (1973),p. 17.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 2 (1973),p. 17.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . NTP Carcinogenesis Studies (feed); Some Evidence: rat NTPTR*    National Toxicology Program Technical Report Series. (Research Triangle Park, NC 27709) No. NTP-TR-295,85 . . EPA Genetic Toxicology Program.

Asbestos, chrysotile Safety Profile

Confirmed human carcinogen producing tumors of the lung. Human mutation data reported. Poison by intraperitoneal route. Human systemic effects by inhalation: lung fibrosis, dyspnea, and cough.

Asbestos, chrysotile Standards and Recommendations

OSHA PEL: TWA 2 million fibers/m3; CL 10 million fibers/m3; Cancer Hazard
ACGIH TLV: TWA 0.1 fibers/cc; Confirmed Human Carcinogen
DFG MAK: DFG TRK: (Fine dust particles that are able to reach the alveolar area of the lung) 1 × 106 fibers/m3 (0.05 mg/m3), applicable when there is more than 2.5% asbestos in the dust
NIOSH REL: (asbestos): 0.1 fb/cc in a 400 L air sample
DOT Classification:  9; Label: CLASS 9

Asbestos, chrysotile Analytical Methods

For occupational chemical analysis use NIOSH: Fibers, 7400; Asbestos Fibers, 7402.

Asbestos, chrysotile Specification

 Asbestos, chrysotile (12001-29-5), a slender, fine, flaxy fiber, also can be called Magnesium hydrogen orthosilicate hydrate (3:2:1) ; Antigorite ; Chrysotile ; and White asbestos .Long term occupational exposure to the dust can result in lung cancer. It is resistant to fire and most solvents. The primary hazard is the threat to the environment.

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