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Sulfates and sulfur salts

Sulfite

Also known as Sulfite ion, Sulfites, Inorganic Sulfites

CAS 14265-45-3Formula O3S-2Molar mass 80.06 g/mol
7 suppliers listed
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Sulfite chemical structure, O3S-2, CAS 14265-45-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
14265-45-3
Formula
O3S-2
Molar mass
80.06 g/mol
HS code
283220
Category
Sulfates and sulfur salts

What is Sulfite?

Plain description, key identifiers and synonyms

Sulfite is a sulfur oxoanion that is the conjugate base of hydrogen sulfite (H2SO3). It is a sulfur oxoanion, a sulfur oxide and a divalent inorganic anion. It is a conjugate base of a hydrogensulfite.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
sulfite
CAS number
14265-45-3 CAS number cross-checked
Molecular formula
O3S-2
UNII
15744271E9
InChIKey
LSNNMFCWUKXFEE-UHFFFAOYSA-L
InChI
InChI=1S/H2O3S/c1-4(2)3/h(H2,1,2,3)/p-2
SMILES (canonical and isomeric)
[O-]S(=O)[O-]

Synonyms

  • Sulfite ion
  • Sulfites
  • Inorganic Sulfites
  • Sulfites, Inorganic
  • Sulphite
  • Sulfonate
  • Sulfite ions
  • Sulfite dianion
  • trioxosulfate(2-)
  • sulfurous acid, ion(2-)
  • organosulfonate
  • sulfonates
  • organosulfonates
  • trioxidosulfate(2-)
  • Sulfite (2-)
  • organosulfonate oxoanion
  • Sulfiite (SO32-)
  • organosulfonate oxoanions
  • hydridotrioxidosulfate(1-)
  • Sulfite(2-)
  • Sulfite (so32-)
  • SHO3(-)
  • [SHO3](-)
  • SO3(2-)
  • [SO3](2-)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
80.06 g/molcalc.
Exact mass
79.9579 Dacalc.
LogP (octanol/water)
-1calc.
Topological polar surface area
63.19 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
4calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
-2calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Sulfite suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 7 suppliers
7 of 7 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

7 suppliers in 3 countries

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Sulfite price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Roles

  • Saccharomyces cerevisiae metabolite
  • animal metabolite
  • eukaryotic metabolite
  • fungal metabolite
  • human metabolite
  • mammalian metabolite
  • metabolite
  • mouse metabolite

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Sulfite is traded under.

HS 2832.20Indicative HS code

Sulphites, thiosulphates, other sulphites

World exports in 2024
$39.4M
−42.1% vs 2023, imports $68.4M
2019 to 2024
Top exporters
  1. United States50.3%
  2. United Kingdom8.7%
  3. India * partner reported7.1%
Top importers
  1. Mexico24.8%
  2. Spain9.3%
  3. Turkey6.2%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Sulfite is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Sulfite, based on the data on this page

What is Sulfite?

Sulfite is a sulfur oxoanion that is the conjugate base of hydrogen sulfite (H2SO3). It is a sulfur oxoanion, a sulfur oxide and a divalent inorganic anion. It is a conjugate base of a hydrogensulfite.

What is the CAS number of Sulfite?

The CAS registry number of Sulfite is 14265-45-3.

What is the molecular formula and weight of Sulfite?

The molecular formula of Sulfite is O3S-2 and its molar mass is 80.06 g/mol.

What is Sulfite used for?

Known uses and roles of Sulfite include saccharomyces cerevisiae metabolite, animal metabolite, eukaryotic metabolite, fungal metabolite, human metabolite and 3 more.

Is Sulfite hazardous?

No GHS hazard classification for Sulfite is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Sulfite?

Sulfite is usually classified under HS code 283220 (Sulphites, thiosulphates, other sulphites). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Sulfite?

CompoundList lists 7 suppliers of Sulfite in China, Germany and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Sulfite?

Suppliers quote Sulfite on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Sulfite

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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