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Basic Information
| CAS No.: | 7778-44-1 |
|---|---|
| Name: | CALCIUM ARSENATE |
| Molecular Structure: | |
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| Formula: | AsH3 O4 . 3/2 Ca |
| Molecular Weight: | 398.08 |
| Synonyms: | Calciumarsenate (Ca3(AsO4)2) (7CI); Calcium arsenate; Chip-Cal Granular; Cucumberdust; Pencal; Spra-cal; Tricalcium arsenate |
| Density: | 3,62 g/cm3 |
| Melting Point: | 1455℃ [CRC10] |
| Solubility: | It is soluble in water and acids, insoluble in organic solvents |
| Risk Codes: | 23/25-45-50/53 |
| Safety: | Confirmed human carcinogen. Poison by ingestion. Moderately toxic by skin contact. When heated to decomposition it emits toxic fumes of arsenic. |
| PSA: | 172.50000 |
| LogP: | -1.71200 |
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CALCIUM ARSENATE
Chemistry
The Molecular formula of Calcium arsenate (7778-44-1): Ca3As2O8
The Molar mass of Calcium arsenate (7778-44-1): 398.072 g/mol
The Molecular Structure:
Appearance white powder
Density: 3.620 g/cm3, solid
Melting point: 1455°C (decomposes)
Solubility in water: 0.013 g/100 mL (25°C)
Solubility in Organic solvents: insoluble
Solubility in acids: soluble
Other names: Calcium orthoarsenate;Cucumber dust.
Calcium arsenate (7778-44-1) is an extremely poisonous chemical compound. It is highly soluble in water.
The Molar mass of Calcium arsenate (7778-44-1): 398.072 g/mol
The Molecular Structure:
Appearance white powder
Density: 3.620 g/cm3, solid
Melting point: 1455°C (decomposes)
Solubility in water: 0.013 g/100 mL (25°C)
Solubility in Organic solvents: insoluble
Solubility in acids: soluble
Other names: Calcium orthoarsenate;Cucumber dust.
Calcium arsenate (7778-44-1) is an extremely poisonous chemical compound. It is highly soluble in water.
Uses
Calcium arsenate (7778-44-1) is used extensively as an insecticide and as a fungicide.
Production
Calcium arsenate (7778-44-1) is produced by the reaction of calcium chloride, calcium hydroxide, and sodium arsenate or lime and arsenic acid:
2CaCl2 + Ca(OH)2 + 2Na2HAsO4 → Ca3(AsO4)2 + 4NaCl + 2H2O
2CaCl2 + Ca(OH)2 + 2Na2HAsO4 → Ca3(AsO4)2 + 4NaCl + 2H2O
Toxicity Data With Reference
Calcium arsenate (7778-44-1) is more toxic than lead arsenate.
Consensus Reports
NTP 10th Report on Carcinogens, 2000:known to be human carcinogen
Safety Profile
Confirmed human carcinogen. When heated to decomposition it emits toxic vapors of NOx.
Risk Statements: 23/25-45-50/53
23/25: Toxic by inhalation and if swallowed
45: May cause cancer
50/53: Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Safety Statements: 45-53
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
53: Avoid exposure - obtain special instruction before use
RIDADR: 1573
HazardClass: 6.1
Risk Statements: 23/25-45-50/53
23/25: Toxic by inhalation and if swallowed
45: May cause cancer
50/53: Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Safety Statements: 45-53
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
53: Avoid exposure - obtain special instruction before use
RIDADR: 1573
HazardClass: 6.1