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Certificate of Analysis

Arsenic(V) oxide, 99.9% (metals basis)

CAS: 1303-28-2 MDL: MFCD00003434  EINECS: 215-116-9
UN#:UN1559Hazard Class:6.1Packing Group:II
Alternate Name: Arsenic pentoxide


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Chemical Properties

Formula: As2O5  Density: 4.32
Formula weight: 229.79  Sensitivity: Hygroscopic
Form: -100 Mesh Powder Solubility: Freely soluble in water and alcohol
Melting point: 315° dec. 

Other References

Merck: 14,798
UN#: UN1559
Harmonized Tariff Code:   2811.29

GHS Hazard and Precautionary Statements

Hazard Statements : H301-H331-H350-H400-H410

Toxic if swallowed. Toxic if inhaled. May cause cancer. Very toxic to aquatic life. Very toxic to aquatic life with long lasting effects.

Precautionary Statements : P261-P281-P301+P310-P304+P340-P405-P501A

Avoid breathing dust/fume/gas/mist/vapours/spray. Use personal protective equipment as required. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

ToxicHealth HazardDangerous for the environment

Risk & Safety

Risk Phrases: 45-23/25-50/53
May cause cancer. Toxic by inhalation and if swallowed. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Phrases: 53-45-60-61
Avoid exposure - obtain special instructions before use. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). This material and/or its container must be disposed of as hazardous waste. Avoid release to the environment. Refer to special instructions/Safety data sheets
Toxic Dangerous for the environment
RTECS: CG2275000