AMMONIUM BISULFITE
Ammonium Bisulfite
CAS: 10192-30-0
Molecular Formula: H5NO3S
AMMONIUM BISULFITE - Names and Identifiers
AMMONIUM BISULFITE - Physico-chemical Properties
| Molecular Formula | H5NO3S |
| Molar Mass | 99.11 |
| Density | 2.03g/cm3 |
| Melting Point | 147°C |
| Water Solubility | soluble |
| Solubility | Water (Soluble) |
| Appearance | colorless crystals |
| Storage Condition | Refrigerator, Under inert atmosphere |
| Physical and Chemical Properties | Character: white orthorhombic prism. melting point 150 ℃ relative density 2.03g/cm3 solubility soluble in water. |
| Use | Used as a preservative, reducing agent, also used in the manufacture of sulfur dioxide, insurance powder, etc |
AMMONIUM BISULFITE - Risk and Safety
| UN IDs | UN 2693 |
| Hazard Class | 8 |
| Packing Group | III |
AMMONIUM BISULFITE - Upstream Downstream Industry
| Raw Materials | Ammonium hydroxide sulfur dioxide Ammonia Ammonia |
| Downstream Products | ammonium sulfite 3-Methyl-1-phenyl-2-pyrazolin-5-one |
AMMONIUM BISULFITE - Nature
Open Data Verified Data
pure ammonium bisulfite is a white or light yellow rhomboid crystal. Relative density 2. 03C, 150 sublimation. Slightly sulfur dioxide. It is easy to absorb moisture in the air. Very soluble in water, lOOmL 10 deg C water dissolved 2679,60 deg C dissolved 6209. Soluble in ethanol. In case of acid and heat uniform decomposition and release of sulfur dioxide. Exposure to air for a long time is susceptible to oxidation to ammonium sulfate. Has a strong reduction. The solution was light to light brown with sulfur dioxide odor. Relative density of cs096 solution) 1.3. It can interact with acid and alkali. In the air is easy to be oxidized, heat decomposition and release of sulfur dioxide.
Last Update：2025-06-10 22:55:16
AMMONIUM BISULFITE - Preparation Method
Open Data Verified Data
an ammonium bisulfite solution was prepared by sequentially absorbing the tail gas produced by contact sulfuric acid with aqueous ammonia through two packed columns.
Last Update：2025-06-10 22:55:16
AMMONIUM BISULFITE - Application
Open Data Verified Data
In the field of water treatment, it can be used as an oxygen scavenger for boiler water, drilling mud and closed-loop circulating water cooling to prevent corrosion of equipment by dissolved oxygen. Especially suitable for small and medium-sized low-pressure boilers. In the drilling industry, ammonium bisulfite and crystalline phase Fe304 (as catalyst) are added to the drilling mud containing montmorillonite, which can effectively remove the dissolved oxygen in the mud and prevent the corrosion of the well pipe. In addition, ammonium bisulfite can be used for the production of pure liquid sulfur dioxide, sodium hydrosulfite, hanging block and some dyes and medicines; In the manufacture of synthetic fiber is the raw material for the production of caprolactam; in the pulp and paper industry for pulp cooking and bleaching treatment.
Last Update：2025-08-19 16:24:40
AMMONIUM BISULFITE - Safety
Open Data Verified Data
ammonium bisulfite is a low toxicity compound. The concentrated solution has mild irritation to the skin, but short-term contact does not cause harm. After contact with the solution, rinse with water for a moment. The product itself has no risk of fire and explosion. If there is a fire, it can be put out with water. Should be stored in a cool and dry warehouse. The container must be sealed to prevent oxidation in contact with air. Not co-stored with acids or bases.
Last Update：2025-06-10 22:55:16
AMMONIUM BISULFITE - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | used as a preservative, reducing agent, also used in the manufacture of sulfur dioxide, used for the preparation of liquid sulfur dioxide (100% SO2), sodium hydrosulfite (Na2S2O4), white block (NaHSO2? CH2O? 2H2O) of the raw materials. The pharmaceutical industry is used as a reducing agent. |
| production method | absorption method through two packed columns, the tail gas produced by Contact Sulfuric acid is sequentially absorbed by ammonia water, ammonium bisulfite solution was prepared. Its 2NH3? H2O SO2→(NH4)2SO3 H2O(NH4)2SO3 SO2 H2O→2NH4HSO3 |
| category | corrosive article |
| flammability hazard characteristics | thermal decomposition of toxic sulfur dioxide and ammonia gases |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from alkalis. |
| fire extinguishing agent | sand, water mist, carbon dioxide |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 02:00:04
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Raw Materials for AMMONIUM BISULFITE
Downstream Products for AMMONIUM BISULFITE