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13454 Sodium sulfite, ACS, 98.0% min

CAS Number
7757-83-7
Synonyms

Stock No. Size Price ($) Quantity Availability
13454-36 500g 41.00
13454-A3 2kg 73.50
13454-A9 10kg 298.00
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Sodium sulfite, ACS, 98.0% min

MDL
MFCD00003503
EINECS
231-821-4

Chemical Properties

Formula
Na2SO3
Formula Weight
126.04
Form
Granular
Melting point
>500° dec.
Density
2.633
Storage & Sensitivity
Moisture Sensitive. Air Sensitive. Store under Nitrogen. Ambient temperatures.
Solubility
Soluble in water and glycerol. Insoluble in alcohol, liquid chlorine and liquid ammonia.

Grade Specifications

Maximum level of impurities: Insoluble matter 0.005%, Free acid P.T., Titratable free base 0.03meq/g, Cl 0.02%, Heavy Metals (as Pb) 0.001%, Fe 0.001%

Applications

Sodium sulfite is used in the photography industry to protect developing solutions from oxidation; in the pulp and paper industry; in water treatment as an oxygen scavenger agent, as a desulfurizing and dechlorinating agent in the leather industry and as a bleaching agent in the textile industry. It is used as a preservative to prevent dried fruit from discoloring. It finds application as a sulfonation and sulfomethylation agent in the chemical industry. It is involved in the production of sodium thiosulfate. Other applications include forth flotation ores, oil recovery and manufacture of dyes.

Notes

Hygroscopic. Moisture and air sensitive. Keep the container tightly closed in a dry and well-ventilated place. Incompatible with acids and strong oxidizing agents.

Literature References

Cavka, A.; Martín, C.; Alriksson, B.; Mörtsell, M.; Jönsson, L. J. Techno-economic evaluation of conditioning with sodium sulfite for bioethanol production from softwood. Bioresour. Technol. 2015, 196, 129-135.

Du, F.; Alam, M. N.; Pawliszyn, J. Aptamer-functionalized solid phase microextraction-liquid chromatography/tandem mass spectrometry for selective enrichment and determination of thrombin. Anal. Chim. Acta. 2014, 845, 45-52.

Other References

Merck
14,8682
Harmonized Tariff Code
2832.10
TSCA
Yes
RTECS
WE2150000

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