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Sodium m-arsenite
Sodium m-arsenite
- CAS:
- 7784-46-5
- MF:
- AsO2.Na
- MW:
- 129.91
Properties
- Melting point:
- 817 °C(lit.)
- Boiling point:
- 613 °C(lit.)
- Density
- 5.727 g/mL at 25 °C(lit.)
- storage temp.
- Store at +15°C to +25°C.
- solubility
- H2O: soluble
- form
- powder
- color
- off-white to gray
- PH
- 9.3 (H2O, 20°C)
- Water Solubility
- Miscible with water. Slightly miscible with alcohol.
- Merck
- 13,8651
- Stability:
- Stable. Incompatible with strong oxidizing agents, strong acids. Protect from moisture. Absorbs carbon dioxide from air.
Safety Information
- Symbol(GHS)
GHS06,GHS08,GHS09
- Signal word
- Danger
- Hazard statements
- H301+H331-H350-H410
- Precautionary statements
- P201-P202-P261-P273-P301+P310-P304+P340+P311
- Hazard Codes
- T,N
- Risk Statements
- 23/25-50/53-51/53-45-52/53-22-23/24/25-21-34
- Safety Statements
- 20/21-28-45-60-61-53-36/37-36/37/39-26
- RIDADR
- UN 1558 6.1/PG 2
- WGK Germany
- 3
- RTECS
- CG0525000
- F
- 10
- TSCA
- Yes
- HS Code
- 2842 90 80
- HazardClass
- 8
- PackingGroup
- III
- Toxicity
- LD50 orally in rats: 0.041 g/kg (Smyth)
Use
Sodium m-arsenite may burn but does not ignite readily. When heated Sodium m-arsenite emits toxic fumes of arsenic and sodium oxide. Slowly converted in solution to arsenates by atmospheric oxygen; in dry state Sodium m-arsenite is decomposed by carbon dioxide.
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