silicic acid

Names

[ CAS No. ]:
1343-98-2

[ Name ]:
silicic acid

[Synonym ]:
MFCD00054122
Silicic acid
EINECS 215-683-2

Chemical & Physical Properties

[ Density]:
0.230 g/cm3

[ Molecular Formula ]:
H₂O₃Si

[ Molecular Weight ]:
78.09960

[ Exact Mass ]:
77.97730

[ PSA ]:
57.53000

[ Stability ]:
Stable.

[ Water Solubility ]:
Soluble in water

MSDS

Click to get detail MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :: VV8853000

CHEMICAL NAME :: Silicic acid (polyortho)

CAS REGISTRY NUMBER :: 1343-98-2

LAST UPDATED :: 199710

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 680 mg/m3/6H/2W-I

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - fibrosis, focal (pneumoconiosis) Lungs, Thorax, or Respiration - changes in lung weight Related to Chronic Data - death

REFERENCE :: FCTOD7 Food and Chemical Toxicology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.20- 1982- Volume(issue)/page/year: 29,341,1991

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 35 mg/m3/6H/13W-I

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - other changes Lungs, Thorax, or Respiration - changes in lung weight Nutritional and Gross Metabolic - weight loss or decreased weight gain

REFERENCE :: FCTOD7 Food and Chemical Toxicology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.20- 1982- Volume(issue)/page/year: 29,341,1991 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 80288 No. of Facilities: 478 (estimated) No. of Industries: 20 No. of Occupations: 16 No. of Employees: 3828 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 80288 No. of Facilities: 6758 (estimated) No. of Industries: 58 No. of Occupations: 70 No. of Employees: 111636 (estimated) No. of Female Employees: 28296 (estimated)

Safety Information

[ Hazard Codes ]:
Xi: Irritant;

[ Risk Phrases ]:
R36/37

[ Safety Phrases ]:
S22-S26-S36-S24/25

[ WGK Germany ]:
3

[ RTECS ]:
VV8853000

[ HS Code ]:
2842909090

Customs

[ HS Code ]: 2842909090