Sodium Sulfite

Base Information Edit

Chemical Name:Sodium Sulfite
CAS No.:7757-83-7
Deprecated CAS:68135-69-3
Molecular Formula:Na2SO3
Molecular Weight:126.044
Hs Code.:28321000
European Community (EC) Number:231-821-4,689-767-6
ICSC Number:1200
UNII:VTK01UQK3G
DSSTox Substance ID:DTXSID2044260
Nikkaji Number:J3.108I
Wikipedia:Sodium sulfite,Sodium_sulfite
Wikidata:Q407806
NCI Thesaurus Code:C28205
RXCUI:36723
ChEMBL ID:CHEMBL1945334
Mol file:7757-83-7.mol

Synonyms:sodium sulfite;sodium sulfite, 35S-labeled cpd;sodium sulfite, heptahydrate;sodium sulphite;sulfurous acid, sodium salt

Suppliers and Price of Sodium Sulfite

Supply Marketing:Edit

Business phase:: The product has achieved commercial mass production^*data from LookChem market partment

Manufacturers and distributors:

Manufacture/Brand
Chemicals and raw materials
Packaging
price

Usbiological
Sodium Sulfite anhydrous
1kg
$ 355.00

TRC
Sodium sulfite
100g
$ 130.00

Strem Chemicals
Sodium sulfite, anhydrous, 98+% (ACS)
250g
$ 20.00

Strem Chemicals
Sodium sulfite, anhydrous, 98+% (ACS)
1kg
$ 57.00

Sigma-Aldrich
Sodium sulfite puriss., meets analytical specification of Ph.?Eur., BP, NF, anhydrous, 95.0-100.0% (iodometric)
6 x 2.5 kg
$ 648.00

Sigma-Aldrich
Sodium sulfitepuriss., meets analytical specification of Ph. Eur., BP, NF, anhydrous, 95.0-100.0% (iodometric)
6x2.5kg-r
$ 626.00

Sigma-Aldrich
Sodium sulfite anhydrous for analysis EMSURE Reag. Ph Eur
1066579050
$ 2730.00

Sigma-Aldrich
Sodium sulfite anhydrous for analysis EMSURE? Reag. Ph Eur
50 kg
$ 2617.75

Sigma-Aldrich
Sodium sulfite EMPROVE? ESSENTIAL Ph Eur,BP,NF,E 221
1066529029
$ 258.00

Sigma-Aldrich
Sodium sulfite puriss., meets analytical specification of Ph.?Eur., BP, NF, anhydrous, 95.0-100.0% (iodometric)
2.5 kg
$ 238.00

Total 371 raw suppliers

Chemical Property of Sodium Sulfite Edit

Chemical Property:

Appearance/Colour:white crystals or powder
Melting Point:500 °C
Refractive Index:1,484
PSA：82.40000
Density:2.63
LogP:-0.13840
Storage Temp.:Store at RT.
Sensitive.:Hygroscopic
Solubility.:H2O: 1 M at 20 °C, clear, colorless
Water Solubility.:23 g/100 mL (20 ºC)
Hydrogen Bond Donor Count:0
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:0
Exact Mass:125.93635360
Heavy Atom Count:6
Complexity:18.8

Purity/Quality:

99% ^*data from raw suppliers

Sodium Sulfite anhydrous ^*data from reagent suppliers

Safty Information:

Pictogram(s): Xn
Hazard Codes:Xn
Statements: 31-36/37/38-22-40-36/38
Safety Statements: 24/25-36-26-22

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

Chemical Classes:Other Classes -> Sulfites
Canonical SMILES:[O-]S(=O)[O-].[Na+].[Na+]
Inhalation Risk:A nuisance-causing concentration of airborne particles can be reached quickly when dispersed.
Effects of Short Term Exposure:The aerosol is irritating to the respiratory tract.
Effects of Long Term Exposure:Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation may cause asthma.
Description As a soluble sodium salt of sulfurous acid, Sodium sulfite (Na2SO3) shows blenching, de-sulfurizing and dechlorinating properties which is widely applied in various fields. It is primarily used in the pulp and papermaking industry due to its blenching activity. It can serve as a good additive to help preserve the fresh appearance of good products. Besides, sodium sulfite is a component in many pharmaceuticals, which is effective to maintain the potency and stability of drugs. It can also be applied for water treatment as an oxygen scavenger agent and applied in flue gas desulfurization and preservation of photo developer solutions, etc.
Uses Sodium sulfite (Na2SO3) is an antioxidant, used as a preservative except with meats. It is also used for water treatment and in photography and textile bleaching. sodium sulfite has anti-septic, preservative, and anti-oxidant properties. Sodium sulfite is also a topical anti-fungal. These white crystals were prepared by passing sulfurous gas over moist sodium carbonate. Sodium sulfite is soluble in water but less so in alcohol. It was used as a preservative for alkaline developers and as a hypo clearing agent in photographic printing. Paper industry (semichemical pulp), reduc- ing agent (dyes), water treatment, photographic developer, food preservative and antioxidant, tex- tile bleaching (antichlor).

Technology Process of Sodium Sulfite

There total 180 articles about Sodium Sulfite which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 93.0%

: 7757-82-6
sodium sulfate

: 7757-83-7
sodium sulfite

Guidance literature:: With pyrographite; In neat (no solvent); redn., 750°C, diameter of C-particels about 0.4mm, 30min;;

Reference yield:

: sodium nitrososulfate

: 10102-43-9
nitrogen(II) oxide

: 7757-82-6
sodium sulfate

: 10024-97-2
dinitrogen monoxide

: 7757-83-7
sodium sulfite

Guidance literature:: In neat (no solvent); decomposition on air under evolution of heat; evolution of N2O, NO and formation of Na2SO4 and Na2SO3 as powdery residue;;

Reference yield:

: formaldehyde sodium sulfoxylate*2H₂O

: sodium hydrogen sulfide

: 50-00-0,30525-89-4,61233-19-0
formaldehyd

: sodium hydrogensulfite * CH₂O

: sodium thiosulfate

: 7757-83-7
sodium sulfite

Guidance literature:: In water; byproducts: NaOH; thermal decompn. of 30% rongalite soln., kind of products of decompn. and their amounts depend on temp.;