Calcium arsenate (as As)

May 1994
Immediately Dangerous to Life or Health Concentrations (IDLH)

CAS number: 7778-44-1

NIOSH REL: 0.002 mg/m3 15-minute CEILING; NIOSH considers calcium arsenate to be a potential occupational carcinogen as defined by the OSHA carcinogen policy [29 CFR 1990].

Current OSHA PEL: 0.010 mg/m3 TWA

1989 OSHA PEL: Same as current PEL

1993-1994 ACGIH TLV: 0.01 mg/m3 TWA, A1

Description of Substance: Colorless to white, odorless solid.

LEL: Noncombustible Solid

Original (SCP) IDLH: 100 mg As/m3

Basis for original (SCP) IDLH: Because no data on acute inhalation toxicity are available for calcium arsenate, the chosen IDLH is based on an analogy with arsenic and compounds (as As) which has an IDLH of 100 mg As/m3.

Short-term exposure guidelines: None developed

ACUTE TOXICITY DATA

Lethal dose data:

Species Reference Route LD50(mg/kg) LDLo(mg/kg) Adjusted LD Derived value
RatRat

Mouse

Rabbit

Dog

Back et al. 1972Lehman 1951

MacEwen and Vernot 1972

Muehlberger 1930

Perkow 1971/1976

oraloral

oral

oral

oral

81220

794

50

38

———-

—–

—–

—–

2,103 mg As/m352 mg As/m3

2,056 mg As/m3

132 mg As/m3

98 mg As/m3

210 mg As/m35.2 mg As/m3

206 mg As/m3

13 mg As/m3

9.8 mg As/m3

Human data: None relevant for use in determining the revised IDLH.

 

REFERENCES:

1. Back KC, Thomas AA, MacEwen JD [1972]. Reclassification of materials listed as transportation health hazards. Wright-Patterson Air Force Base, OH: 6570th Aerospace Medical Research Laboratory, Report No. TSA-20-72-3, pp. A-30 to A-31.

2. Lehman AJ [1951]. Chemicals in foods: a report to the Association of Food and Drug Officials on current developments. Part II. Pesticides. Q Bulletin Assoc Food Drug Off U.S. 15(4):122-125.

3. MacEwen JD, Vernot EH [1972]. Toxic Hazards Research Unit annual technical report: 1972. Wright-Patterson Air Force Base, OH: Aerospace Medical Research Laboratory, Report AMRL-TR-72-62.

4. Muehlberger CW [1930]. Toxicity studies of fluorine insecticides. J Pharmacol Exp Ther 39:246-248.

5. Perkow W [1971/1976]. Wirksubstanzen der Pflanzenschytz and Schadlingsbekampfungsmittel. Berlin, Germany: Verlag Paul Parey (in German).

Page last reviewed: December 4, 2014