The Registry of Toxic Effects of Chemical Substances

Silica, amorphous - diatomaceous earth

RTECS #: VV7311000

CAS #: 61790-53-2

UPDATE: May 2004 MW: N/R MF: N/R


NOTE:

TABLE OF CONTENTS:
  1. SYNONYMS:
  2. REVIEWS:
  3. STANDARDS AND REGULATIONS:
  4. NIOSH DOCUMENTATION AND SURVEILLANCE:
  5. STATUS IN FEDERAL AGENCIES:
  6. REFERENCES:

SYNONYMS:

  1. Diatomaceous earth, natural
  2. Celite
  3. Kieselguhr
  1. Silica, amorphous - diatomaceous earth (uncalcined) (ACGIH)
  2. Silica, amorphous, diatomaceous earth, containing >1 % crystalline silica (OSHA)


SKIN AND EYE IRRITATION DATA AND REFERENCES:

ROUTE/
ORGANISM 		DOSE
EFFECT

 REFERENCE
N/R
 N/R N/R N/R


MUTATION DATA AND REFERENCES:

SYSTEM TEST ROUTE/
ORGANISM/
TISSUE 		DOSE REFERENCE
N/R N/R N/R N/R


REPRODUCTIVE EFFECTS DATA AND REFERENCES:

ROUTE/
ORGANISM 		DOSE
EFFECT

 REFERENCE
N/R
 N/R N/R N/R


TUMORIGENIC DATA AND REFERENCES:

ROUTE/
ORGANISM 		DOSE
EFFECT

 REFERENCE
N/R
 N/R N/R N/R


ACUTE TOXICITY DATA AND REFERENCES:

ROUTE/
ORGANISM 		DOSE
EFFECT

 REFERENCE
N/R
 N/R N/R N/R


OTHER MULTIPLE DOSE DATA AND REFERENCES:

ROUTE/
ORGANISM 		DOSE
EFFECT

 REFERENCE
N/R
 N/R N/R N/R


REVIEWS:

ORGANIZATION STANDARD
REFERENCE
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value time-weighted average 10mg/m3 (E, intermittent) DTLVS* TLV/BEI,2003
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value time-weighted average 3 mg/m3 (E,R) DTLVS* TLV/BEI,2003
International Agency for Research on Cancer (IARC) Cancer Review Animal Inadequate Evidence IMEMDT 42,39,1987
International Agency for Research on Cancer (IARC) Cancer Review Human Inadequate Evidence IMEMDT 42,39,1987
International Agency for Research on Cancer (IARC) Cancer Review Animal Inadeauate Evidence IMEMDT 68,41,1997
International Agency for Research on Cancer (IARC) Cancer Review Human Inadequate Evidence IMEMDT 68,41,1997
International Agency for Research on Cancer (IARC) Cancer Review Group 3 IMEMDT 68,41,1997


STANDARDS AND REGULATIONS:

ORGANIZATION STANDARD
REFERENCE
Mine Safety and Health Administration (MSHA) STANDARD - dust in air time-weighted average 20 mccpf DTLWS* 3,33,1973
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry) 8 hour time-weighted average 80 mg/m3/%SiO2 CFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction) 8 hour time-weighted average 80 mg/m3/%SiO2 CFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards) 8 hour time-weighted average 20 million particles per cubic foot/(%SiO2+5) CFRGBR 29,1915.1000,1993
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Federal Contractors) 8 hour time-weighted average 20 million particles per cubic foot/(%SiO2+5) CFRGBR 41,50-204.50,1994
Occupational Exposure Limit - AUSTRIA MAK 4 mg/m3, JAN1999
Occupational Exposure Limit - GERMANY MAK 4 mg/m3, JAN1999
Occupational Exposure Limit - NORWAY time-weighted average 1.5 mg/m3 (resp. dust), JAN1999
Occupational Exposure Limit - SWITZERLAND MAK- week 4 mg/m3, JAN1999
Occupational Exposure Limit - THAILAND time-weighted average 80 mg/m3, JAN1993
Occupational Exposure Limit - UNITED KINGDOM time-weighted average 6 mg/m3, total inhalable dust, SEP2000
Occupational Exposure Limit - UNITED KINGDOM time-weighted average 1.2 mg/m3, respirable dust, SEP2000
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN, KOREA American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value;

time-weighted average 3 mg/m3 (E,R)
Occupational Exposure Limit IN NEW ZEALAND, SINGAPORE, VIETNAM American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value
time-weighted average 3 mg/m3 (E,R)


NIOSH DOCUMENTATION AND SURVEILLANCE:

ORGANIZATION STANDARD or SURVEY
REFERENCE
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO SILICA, amorphous,diatomaceous earth-air time-weighted average 6 mg/m3 NIOSH* DHHS #92-100,1992
National Occupational Exposure Survey 1983 National Occupational Exposure Survey 1983: Hazard Code: X3017;
Number of Industries 109;
Total Number of Facilities 11,151;
Number of Occupations 97;
Total Number of Employees Exposed 169,362;
Total Number of Female Employees Exposed 24,496


STATUS IN FEDERAL AGENCIES:

ORGANIZATION
REFERENCE
EPA TSCA Section 8(b) CHEMICAL INVENTORY
Used in clarifying liquids, in manufacture of fire brick and heat insulators
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001
NIOSH Analytical Method, 1994: Silica, amorphous, 7501


REFERENCES:

CODEN
REFERENCE
CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402)
DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996
DTLWS* "Documentation of the Threshold Limit Values for Substances in Workroom Air," Supplements. For publisher information, see 85INA8.
IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972-
NIOSH* National Institute of Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda.

Used in clarifying liquids, in manufacture of fire brick and heat insulators

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