CAS 10196-04-0PubChem CID 25041
Ammonium Sulfite
Ammonium sulfite is a colorless crystalline solid. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. It is used in the manufacture of other chemicals, in medicine, and photography. — CAMEO Chemicals
- IUPAC name
- diazanium;sulfite
- Molecular formula
- H8N2O3S
- Molecular weight
- 116.14 g/mol
- Exact mass
- 116.02556330 Da
- Topological polar surface area
- 84.4 Ų
- Hydrogen-bond donors
- 2
- Hydrogen-bond acceptors
- 4
- Covalent units
- 3
- Defined stereocentres
- 0
Also known as
Diammonium sulfiteAmmonium sulphiteDiammonium sulfonate8LF589Y5GDSulfurous acid, diammonium saltSulfurous acid, ammonium saltRefChem:112210233-484-9
13 more reported names
ammoniumsulfiteAmmoniumsulfitdiazanium;suliteAmmonium sulfonateUNII-8LF589Y5GDAMMONIUM SULFITE [MI]AMMONIUM SULFITE [HSDB]HSDB 1426CHEBI:186946EINECS 233-484-9Sulfurous acid ammonium salt (1:2)Sulfurous acid, ammonium salt (1:2)EC 233-484-9
External database identifiers
- ChEBI:CHEBI:186946
- EPA DTXSID:DTXSID2064991
Evidence from additional scientific databases
EMBL-EBI ChEBI
Exact identifier matchCHEBI:186946
Diammonium sulfite
- Formula
- 2H4N.O3S
- Average mass
- 116.142 g/mol
- Monoisotopic mass
- 116.02556 Da
- Formal charge
- 0
- p-block molecular entity — is a (CHEBI:33675)
- sulfite salt — is a (CHEBI:48857)
- p-block molecular entity — is a (CHEBI:33675)
- sulfite salt — is a (CHEBI:48857)
Additional curated names
diazanium;sulite
Cross-references from this source
- CAS: 10196-04-0 — ChemIDplus
- MANUAL_X_REF: 23404 — ChemSpider
Mapped by: Exact CAS cross-reference in the ChEBI compound record. Retrieved: 2026-08-31. Open source record
NIH PubChem PUG-View
Exact identifier match25041
Attributed physical-property, hazard, environmental and use annotations.
- Color/Form: White, solid Source: Hazardous Substances Data Bank (HSDB)
- Density: greater than 1.1 at 68 °F (USCG, 1999) Source: CAMEO Chemicals
- Density: 1.41 @25 °C Source: PAC Chemical Database, U.S. Department of Energy
- Odor: Odorless Source: Hazardous Substances Data Bank (HSDB)
- Physical Description: Ammonium sulfite is a colorless crystalline solid. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. It is used in the manufacture of other chemicals, in medicine, and photography. Source: CAMEO Chemicals
- Physical Description: Large Crystals; Dry Powder; Liquid Source: EPA Chemical Data Reporting (CDR)
- Physical Description: White odorless solid; [HSDB] White odorless crystalline solid; [MSDSonline] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Solubility: Soluble in water, almost insoluble in alcohol, acetone. Source: Hazardous Substances Data Bank (HSDB)
- pH: Its aq soln is alkaline to litmus. /ammonium sulfate monohydrate/ Source: Hazardous Substances Data Bank (HSDB)
- First Aid: INHALATION: move to fresh air.; INGESTION: give large amount of water; get medical attention.; EYES: flush with water for 15 min.; SKIN: flush with water. (USCG, 1999) Source: CAMEO Chemicals
- Note: This chemical does not meet GHS hazard criteria for 71.1% (133 of 187) of all reports. Source: European Chemicals Agency (ECHA)
- Signal: Danger Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H314 (13.4%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H315 (15%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (15.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335 (10.2%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P260, P261, P264, P264+P265, P271, P280, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P351+P338, P305+P354+P338, P316, P319, P321, P332+P317, P337+P317, P362+P364, P363, P403+P233, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 187 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 133 of 187 reports by companies.; There are 5 notifications provided by 54 of 187 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Signal: Danger Source: Hazardous Chemical Information System (HCIS), Safe Work Australia
- GHS Hazard Statements: H302: Harmful if swallowed [Warning Acute toxicity, oral]; H318: Causes serious eye damage [Danger Serious eye damage/eye irritation] Source: Hazardous Chemical Information System (HCIS), Safe Work Australia
- Precautionary Statement Codes: P264, P264+P265, P270, P280, P301+P317, P305+P354+P338, P317, P330, and P501 (click each P-code to see the statement) Source: Hazardous Chemical Information System (HCIS), Safe Work Australia
- Cosmetic Ingredient Review Finding(s): Safe in the present practices of use and concentration. Ingredient, concentration, and use information are available in documents discoverable at https://cir-reports.cir-safety.org Source: Cosmetic Ingredient Review (CIR)
- Consumer Uses: Soil amendments (fertilizers); Reducing agent; Processing aids not otherwise specified Source: EPA Chemical Data Reporting (CDR)
- Industry Uses: Intermediate; Soil amendments (fertilizers); Reducing agent; Preservative; Processing aids not otherwise specified Source: EPA Chemical Data Reporting (CDR)
- Cosmetic Ingredient Review Link: CIR ingredient: Ammonium Sulfite Source: Cosmetic Ingredient Review (CIR)
- Sources/Uses: Used in photography and in the production of caramel, refractory bricks, lubricants, medicines, permanent wave solutions, ammonium thiosulfite, and ammonium chloride; [HSDB] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Industrial Processes with risk of exposure: Photographic Processing [Category: Other]; Dressing Hair [Category: Other] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Uses: IN PRODN OF CARAMEL. Source: Hazardous Substances Data Bank (HSDB)
- Uses: In photography; as reducing agent; in bricks for blast furnace linings; in lubricants for metal cold-working. Source: Hazardous Substances Data Bank (HSDB)
- Uses: ... Medicine, permanent wave solns. /Ammonium sulfite monohydrate/ Source: Hazardous Substances Data Bank (HSDB)
- Uses: Used in production of ammonium thiosulfite. Source: Hazardous Substances Data Bank (HSDB)
- Uses: For more Uses (Complete) data for AMMONIUM SULFITE (6 total), please visit the HSDB record page. Source: Hazardous Substances Data Bank (HSDB)
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| EMBL-EBI ChEBI | Exact match | 2026-08-31 |
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.