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Arsenic(III) oxide
Arsenic(III) oxide
- CAS:
- 1327-53-3
- MF:
- As2O3
- MW:
- 197.84
Properties
- Melting point:
- 312.3 °C
- Boiling point:
- 465°C
- Density
- 3,738 g/cm3
- vapor pressure
- 0.033Pa at 25℃
- Flash point:
- 465°C subl.
- storage temp.
- Poison room
- solubility
- 37 g/L (20°C)
- form
- Powder
- Specific Gravity
- 3.738
- color
- White
- Water Solubility
- 37 g/L (20 ºC)
- Merck
- 14,804
- crystal system
- Monoclinic
- Space group
- P21/n
- Lattice constant
a/nm b/nm c/nm α/o β/o γ/o V/nm3 0.7992 0.4645 0.9115 90 78.3 90 0.3313
Safety Information
- Symbol(GHS)
GHS05,GHS06,GHS08,GHS09
- Signal word
- Danger
- Hazard statements
- H300-H314-H318-H350-H400-H410
- Precautionary statements
- P260h-P301+P310a-P303+P361+P353-P305+P351+P338-P405-P501a
- Hazard Codes
- T+,N
- Risk Statements
- 45-28-34-50/53
- Safety Statements
- 53-45-60-61
- RIDADR
- UN 1561 6.1/PG 2
- WGK Germany
- 3
- RTECS
- CG3325000
- TSCA
- Yes
- HazardClass
- 6.1
- PackingGroup
- II
- HS Code
- 28112990
- Toxicity
- LD50 in mice, rats (mg/kg): 39.4, 15.1 orally (Harrison)
Use
Arsenic(III) oxide reacts vigorously with fluorine at ordinary temperatures [Mellor 9:34 1946-47]. Dissolves in aqueous acids. Incompatible with tannic acid, infusions of cinchona and other vegetable astringent infusions and decoctions, and with iron in solution [Merck].
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