CAS 10192-30-0PubChem CID 10441651
Ammonium Bisulfite
Ammonium bisulfite is colorless crystals which are soluble in water. It is noncombustible. It is corrosive to aluminum. It is a strong irritant to skin and mucous membranes. It is toxic by skin absorption. — CAMEO Chemicals
- IUPAC name
- azanium hydrogen sulfite
- Molecular formula
- H5NO3S
- Molecular weight
- 99.11 g/mol
- Exact mass
- 98.99901420 Da
- Topological polar surface area
- 80.6 Ų
- Hydrogen-bond donors
- 2
- Hydrogen-bond acceptors
- 4
- Covalent units
- 2
- Defined stereocentres
- 0
Also known as
Ammonium hydrogen sulfiteAmmonium acid sulfiteAmmonium monosulfiteMonoammonium sulfiteAmmonium hydrosulfite8MW949D9GESulfurous acid, monoammonium saltAmmonium sulfite, hydrogen
16 more reported names
Ammonium bisulfite (NH4HSO3)RefChem:112138233-469-7azanium;hydrogen sulfiteAmmonium hydrogensulphiteAmmonium Bisulfite - In waterSulfurous acid, ammonium salt (1:1)Ammoniumbisulfitammonium bisulphiteammonium hydrogensulfiteUNII-8MW949D9GEHSDB 486AMMONIUM BISULFITE [MI]AMMONIUM BISULFITE [HSDB]Ammonium bisulfite - 45% In waterEINECS 233-469-7
External database identifiers
- EPA DTXSID:DTXSID1050462
Evidence from additional scientific databases
NIH PubChem PUG-View
Exact identifier match10441651
Attributed physical-property, hazard, environmental and use annotations.
- Boiling Point: Sublimates at 302.0 °F (USCG, 1999) Source: CAMEO Chemicals
- Boiling Point: at 101.1kPa: 100 °C Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Color/Form: Colorless crystals Source: Hazardous Substances Data Bank (HSDB)
- Color/Form: Colorless to yellow Source: Hazardous Substances Data Bank (HSDB)
- Density: 2.03 at 68 °F 1.40 (72% aqueous solution) (USCG, 1999) - Denser than water; will sink Source: CAMEO Chemicals
- Density: Sp gr: 2.03 Source: Hazardous Substances Data Bank (HSDB)
- Density: Relative density (water = 1): 2.0 Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Melting Point: -10 °C Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Physical Description: Ammonium bisulfite is colorless crystals which are soluble in water. It is noncombustible. It is corrosive to aluminum. It is a strong irritant to skin and mucous membranes. It is toxic by skin absorption. Source: CAMEO Chemicals
- Physical Description: Ammonium bisulfite is a solution of yellow crystals. It is a strong irritant to skin and mucous membranes. It is toxic by skin absorption. It may be corrosive to metals. Source: CAMEO Chemicals
- Physical Description: Liquid Source: EPA Chemical Data Reporting (CDR)
- Physical Description: Colorless to yellow solid; [ICSC] Sold only in solution; [Merck Index] Available as 44% and 68% solution; [MSDSonline] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Physical Description: COLOURLESS-TO-YELLOW LIQUID OR CRYSTALS WITH CHARACTERISTIC ODOUR. Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Solubility: In water: 267 g/100 ml @ 10 °C, 620 G/100 ml @ 60 °C Source: Hazardous Substances Data Bank (HSDB)
- Solubility: In water: 71.8 g/100 ml @ 0 deg Source: Hazardous Substances Data Bank (HSDB)
- Solubility: Solubility in water, g/100ml at 10 °C: 267 (very good) Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Exposure Routes: The substance can be absorbed into the body by ingestion. Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- First Aid: Call a physician.; EYES: Flush with water.; SKIN: Flush exposed area with water. (USCG, 1999) Source: CAMEO Chemicals
- First Aid: Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:; Refer to the "General First Aid" section. Specific First Aid: For corrosives, in case of contact, immediately flush skin or eyes with running water for at least 30 minutes. Additional flushing may be required. (ERG, 2024) Source: CAMEO Chemicals
- Note: This chemical does not meet GHS hazard criteria for 3.7% (6 of 162) of reports. Source: European Chemicals Agency (ECHA)
- Signal: Warning Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H315 (38.3%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (94.4%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335 (37.7%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, 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 162 reports by companies from 11 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 6 of 162 reports by companies.; There are 10 notifications provided by 156 of 162 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: Reducing agent; Soil amendments (fertilizers); Processing aids not otherwise specified Source: EPA Chemical Data Reporting (CDR)
- Industry Uses: Soil amendments (fertilizers); Reducing agent; Other; Intermediate; Solids separation (precipitating) agent, not otherwise specified; Processing aids not otherwise specified Source: EPA Chemical Data Reporting (CDR)
- Cosmetic Ingredient Review Link: CIR ingredient: Ammonium Bisulfite Source: Cosmetic Ingredient Review (CIR)
- Sources/Uses: Used in preservatives, fertilizers, grain treatments, explosives, paper production, and corrosion control in drilling fluids; [HSDB] Also used in photography, food preservation, and the gold industry (cyanide destruction process); [MSDSonline] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Industrial Processes with risk of exposure: Pulp and Paper Processing [Category: Industry]; Using Disinfectants or Biocides [Category: Clean]; Photographic Processing [Category: Other] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Uses: SOURCE OF SULFUR IN FLUID FERTILIZERS. Source: Hazardous Substances Data Bank (HSDB)
- Uses: IN LIQ ANTIMICROBIAL TREATMENT FOR STORAGE GRAIN. Source: Hazardous Substances Data Bank (HSDB)
- Uses: Manufacture of industrial explosives & blasting agents. Source: Hazardous Substances Data Bank (HSDB)
- Uses: Used in sulfite pulping processes. Source: Hazardous Substances Data Bank (HSDB)
- Uses: For more Uses (Complete) data for AMMONIUM BISULFITE (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 | No exact record | 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.