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Calcium arsenate (as As)																				Related Pages
Synonyms & Trade Names
			Calcium salt (2:3) of arsenic acid, Cucumber dust, Tricalcium arsenate, Tricalcium ortho-arsenate
					[Note: Also see specific listing for Arsenic (inorganic compounds, as As).]
CAS No.
			7778-44-1
	RTECS No.
			CG0830000
	DOT ID & Guide
			1573 151

FormulaCa3(AsO4)2
	Conversion
	IDLH
			Ca [5 mg/m3 (as As)]See: 7778441

Exposure Limits
			NIOSH RELCa C 0.002 mg/m3 [15-minute] See Appendix A
					OSHA PEL [1910.1018] TWA 0.010 mg/m3
	Measurement Methods
			**NIOSH** 7900;**OSHA** ID105
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless to white, odorless solid.
					[insecticide/herbicide]													
										
Molecular Weight398.1	
	Boiling PointDecomposes
	Melting Point?
	Solubility(77°F): 0.01%
	Vapor Pressure0 mmHg (approx)
	Ionization PotentialNA											
Specific Gravity3.62	
	Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
Noncombustible Solid
Incompatibilities & Reactivities
			None reported
					[Note: Produces toxic fumes of arsenic when heated to decomposition.]
Exposure Routes
			inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
			lassitude (weakness, exhaustion); gastrointestinal disturbance; peripheral neuropathy; skin hyperpigmentation, palmar planter hyperkeratoses; dermatitis; ; In Animals: liver damage [potential occupational carcinogen]
Target Organs
			Eyes, respiratory system, liver, skin, central nervous system, lymphatic system
Cancer Site[lymphatic & lung cancer]										
Personal Protection/Sanitation
			(See protection codes) **Skin:**Prevent skin contact
							**Eyes:**Prevent eye contact
							**Wash skin:**When contaminated/Daily
							**Remove:**When wet or contaminated
							**Change:**Daily
							**Provide:**Eyewash, Quick drench
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Soap wash promptly
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			**NIOSH****At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:** (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus**Escape:**(APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.Any appropriate escape-type, self-contained breathing apparatus
					Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0765

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
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