Product Details

sodium sulphite anhydrous sodium sulfite powder Na2SO3

Product Description

is a soluble sodium salt of sulfurous acid (sulphite) with the chemical formula Na₂SO₃.It is a white crystal powder or granule that tastes salty with sulphur odor.

CAS RN.:	7757-83-7
EINECS:	231-821-4
H.S.CODE:	2832.1000.00

1. Chemical Analysis

Component	Range	Typical
Na₂SO₃ %	≥ 97.0 %	97.37%
Fe %	≤ 0.003%	0.003%
Water insoluble matter	≤ 0.02%	0.02%
Na₂CO₃	≤ 0.10%	0.10%
Na₂SO₄	≤ 2.5%	2.5%

2. Application

Pulp and paper industry	Lignin removal agent
Water treatment	Oxygen scavenger agent.
Photographic industry	To protect developer solutions from oxidation and (as hypo clear solution) to wash fixer (sodium thiosulfate) from film and photo-paper emulsions.
Textile industry	Bleaching, desulfurizing and dechlorinating agent
Chemical manufacturing	Sulfonation and sulfomethylation agent. It is used in the production of sodium thiosulfate.
Leather trade	The sulfitization of tanning extracts
Other applications	l froth flotation of ores l oil recovery l food preservatives l making dyes l It is used in the purification of TNT for military use.

3. Transportation Information:

DOT Classification:	Not a DOT controlled material
U.N.	Not applicable
Packing Group:	Not applicable

4. Handing & Storage

(1).Precautions:Do not ingest. Do not breathe dust. Wear suitable protective clothing. If ingested, seek medical advice immediately and show the container or the label. Keep away from incompatibles such as oxidizing agents, combustible materials, organic materials, acids.

(2).Storage: Air sensitive. Moisture sensitive. Keep container tightly closed. Keep container in a cool, well-ventilated area.

Packaging & Shipping

5. Packing

l In 25kg bags

l 25MT/20’FCL.