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Alkali Metal Compounds (Li, Na, K, Rb, Cs)

Sodium Bisulfite

Reference StandardIn stock

Buy Sodium Bisulfite (CAS 7631-90-5) from Zemixal: HNaO3S, COA and SDS with every lot, worldwide shipping. Catalogue no. ZX-013174.

Pack sizes
Sodium Bisulfite chemical structure
CAS number7631-90-5
FormulaHNaO3S
Molar mass104.06 g/mol
InChIKeyDWAQJAXMDSEUJJ-UHFFFAOYSA-M
IUPAC namesodium hydrogen sulfite

About Sodium Bisulfite

Researchers and plant chemists source Sodium Bisulfite from Zemixal for routine and specialised work. Key data (Reference Standard): CAS 7631-90-5, formula HNaO3S and molar mass 104.06 g/mol.

Typical applications

  • Materials research
  • Chemical synthesis

Storage and safety notes

Classified under GHS with signal word Warning and hazard statements H302. Read the SDS before first use.

Standard pack sizes are 10 mg, 25 mg, 50 mg, 100 mg and 250 mg, and custom quantities are quoted on request. You receive a batch certificate of analysis and a 16-section SDS with each order. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Typical uses

  • Materials research
  • Chemical synthesis

Applications

Research Labs and Universities

Specifications and identifiers

Specifications of Sodium Bisulfite
Product nameSodium Bisulfite
Catalogue numberZX-013174
CAS number7631-90-5
IUPAC namesodium hydrogen sulfite
Molecular formulaHNaO3S
Molar mass104.06 g/mol
Exact mass103.9544
GradeReference Standard
H-bond donors / acceptors1 / 4
Topological polar surface area79.6 Ų
InChIKeyDWAQJAXMDSEUJJ-UHFFFAOYSA-M
SMILESOS(=O)[O-].[Na+]
PubChem CID23665763
SynonymsHydrogen sodium sulfite, Hydrogen sulfite sodium, Monosodium sulfite, Sodium acid sulfite, Sodium bisulfite (NaHSO3), Sodium bisulphite, Sodium sulfite (NaHSO3), FR-62, HC 007, sodium hydrogensulfite, Sulfurous acid, monosodium salt, Sodium sulhydrate

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H302Harmful if swallowed

Precautionary statements P264, P270, P301 + P317, P330, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Sodium Bisulfite
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request
250 mgQuoted on request
500 mgQuoted on request
1 gQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Sodium Bisulfite

Which CAS number identifies Sodium Bisulfite?
Sodium Bisulfite is registered under CAS 7631-90-5. You may also see it listed as Hydrogen sodium sulfite, Hydrogen sulfite sodium, Monosodium sulfite. Our catalogue number for this item is ZX-013174.
What are the formula and molar mass of Sodium Bisulfite?
For Sodium Bisulfite, its formula is HNaO3S and its molar mass is 104.06 g/mol. The systematic (IUPAC) name is sodium hydrogen sulfite. InChIKey DWAQJAXMDSEUJJ-UHFFFAOYSA-M lets you match it in any structure database.
What grade and pack sizes are available for Sodium Bisulfite?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg, 250 mg, 500 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Sodium Bisulfite?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Sodium Bisulfite to my country?
Yes. Because Sodium Bisulfite is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

Other grades with CAS 7631-90-5

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