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7778-44-1

7778-44-1 structural image
Product Name: CALCIUM ARSENATE
Formula: AsH3O4.3/2Ca
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CHEMICAL AND PHYSICAL PROPERTIES

Physical Description Calcium arsenate is a white powder. Slightly soluble in water. Toxic by inhalation and ingestion. Used as an insecticide and germicide.
Color/Form White powder
Odor Odorless
Boiling Point Decomposes (NIOSH, 2023)
Melting Point 2651 °F (EPA, 1998)
Solubility 0.01 % at 77 °F (NIOSH, 2023)
Density 3.62 (EPA, 1998) - Denser than water; will sink
Vapor Pressure 0 mmHg (approx) (NIOSH, 2023)
Stability/Shelf Life Moisture and carbon dioxide cause slow decomp to calcium carbonate and (phytotoxic) dicalcium hydrogen arsenate. In the presence of acids, water sol, strongly phytotoxic arsenic acid is produced.
Decomposition WHEN HEATED TO DECOMP IT EMITS TOXIC FUMES OF ARSENIC.
Corrosivity Slight corrosive action on metals
Other Experimental Properties Decomp on heating
Chemical Classes Metals -> Arsenic Compounds, Inorganic

SAFETY INFORMATION

Pictogram(s)

Skull and Crossbones
Acute Toxicity
GHS06

Health Hazard
GHS08

Environment
GHS09
GHS Hazard Statements H301:Acute toxicity,oral
H331:Acute toxicity,inhalation
H350:Carcinogenicity
H400:Hazardous to the aquatic environment, acute hazard
H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P201:Obtain special instructions before use.
P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P405:Store locked up.

COMPUTED DESCRIPTORS

Molecular Weight 398.07 g/mol
Hydrogen Bond Donor Count 0
Hydrogen Bond Acceptor Count 8
Rotatable Bond Count 0
Exact Mass 397.69028 g/mol
Monoisotopic Mass 397.69028 g/mol
Topological Polar Surface Area 173 Ų
Heavy Atom Count 13
Formal Charge 0
Complexity 36.8
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 0
Undefined Bond Stereocenter Count 0
Covalently-Bonded Unit Count 5
Compound Is Canonicalized Yes

PRODUCT INTRODUCTION

description

Calcium arsenate is a white powder. Slightly soluble in water. Toxic by inhalation and ingestion. Used as an insecticide and germicide.