SELENOUS ACID

SELENOUS ACID
Article No. Grade Purity Cas no. Molecular Formula Molecular Weight H.S. Code Shelf Life
S0178700100 LR 93% 7783-00-8 H2SeO3 128.97 2811.1990
60 Months

Physical Properties

Physical state at 20 °C

Solid

Colour

White crystalline

pH value

7

Melting Point/ Freezing point [°C]

70 °C

Density [g/cm3]

3.004

Viscosity at 40°C [mm2/s]

Soluble in cold water

Solubility in water [% weight]

Soluble in cold water

Specifications

Appearance:

 White crystalline powder

Insoluble matter:

 1 gm in 5 ml water gives clear solution

Residue on ignition (as SO4):

 Max 0.01%

Assay (as H2SeO3):

 93 - 101%

Selenate and sulphate:

 Passes USP test

Safety Information and Hazard Symbols

Symbol: GHS06, GHS08, GHS09
Signal Word: Danger
UN No.: 3283
IMCO Class No.: 6.1
Packing Group: II
Hazardous Statement: H301-H331-H373-H410
Precaution Statement: P261-P273-P301 + P310-P311-P501
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Globally Harmonized System of classification and Labelling of Chemicals (GHS)

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