Sulfurous acid,diammonium salt, monohydrate (8CI,9CI)
AMMONIUM SULFITE
CAS: 7783-11-1
Molecular Formula: H2O.H2O3S.2H3N
Sulfurous acid,diammonium salt, monohydrate (8CI,9CI) - Names and Identifiers
Sulfurous acid,diammonium salt, monohydrate (8CI,9CI) - Physico-chemical Properties
| Molecular Formula | H2O.H2O3S.2H3N |
| Molar Mass | 134.16 |
| Density | 1.41g/mLat 25°C(lit.) |
| Melting Point | 60-70°C |
| Water Solubility | Soluble in water. Insoluble in acetone and alcohol. |
| Solubility | Slightly soluble in alcohol. Insoluble in acetone and carbon disulfide. Soluble in water, |
| Appearance | Shape Crystalline, color White |
| Specific Gravity | 1.41 |
| Color | White |
| Merck | 14,557 |
| Storage Condition | Store below +30°C. |
| Sensitive | Air Sensitive |
| Refractive Index | 1.515 |
| MDL | MFCD00150959 |
| Physical and Chemical Properties | Chemical properties white or light yellow solution. Decomposition by heat. The relative density of saturated solution is 1.1995(20 ℃) and alkaline. It is corrosive to steel. |
| Use | It is mainly used in the paper industry, and secondly used as a raw material for the production of rapid developer ammonium thiosulfate, and used in organic synthesis as a reducing agent and sulfonating agent. Raw materials for the production of daily chemical curling liquid. |
Sulfurous acid,diammonium salt, monohydrate (8CI,9CI) - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R31 - Contact with acids liberates toxic gas R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
| TSCA | Yes |
Sulfurous acid,diammonium salt, monohydrate (8CI,9CI) - Upstream Downstream Industry
| Raw Materials | Ammonium bicarbonate Ammonium bisulfite |
| Downstream Products | 3,8-DIMETHYL-1,10-PHENANTHROLINE |
Sulfurous acid,diammonium salt, monohydrate (8CI,9CI) - Introduction
Easy to oxidize and absorb moisture. Its aqueous solution is alkaline and corrosive to steel. It is easy to oxidize in the air. Decomposition at 60-70 ℃.
Last Update：2022-10-16 17:30:58
Sulfurous acid,diammonium salt, monohydrate (8CI,9CI) - Nature
| Specific gravity | 1.41 |
| Sensitivity | Air Sensitive |
| Merck | 14,557 |
Last Update：2024-04-10 22:29:15
Sulfurous acid,diammonium salt, monohydrate (8CI,9CI) - Uses and synthesis methods
Introduction
ammonium sulfite monohydrate is colorless monoclinic crystal with melting point of 60~70 ℃ (decomposition), boiling point of 150 ℃ (sublimation), relative density of 1.4125 and refractive index of 1.515. Ammonium sulfite monohydrate is soluble in water, slightly soluble in ethanol, and hardly soluble in acetone.
application
ammonium sulfite monohydrate is mainly used in the paper industry, followed by the production of rapid developer ammonium thiosulfate raw material, used in organic synthesis as a reducing agent, sulfonating agent.
Preparation
ammonium sulfite monohydrate can be obtained by the interaction of ammonia water and sulfurous acid, and sulfur dioxide can also be introduced into ammonia water or (NH4)2CO3 solution and reacted at about 0 ℃.
Production method
1. production is generally prepared by absorbing sulfur dioxide from sulfuric acid tail gas with water or mother liquor or ammonia water or sulfur dioxide from sulfur burning flue gas to prepare ammonium bisulfite, and then adding ammonia water or ammonium bicarbonate for neutralization reaction.
The ammonia water method prepares ammonia water into a solution with a certain specific gravity and alkalinity, and circularly absorbs sulfur dioxide in the exhaust gas of sulfuric acid production or sulfur burning flue gas to prepare ammonium bisulfite solution. When the density of the absorbed liquid phase reaches 1.30~1.32, it is sent to the neutralizer, and then ammonia water is added to neutralize the reaction to the end point. After centrifugal separation and drying, the finished product of ammonium sulfite is prepared.
SO2 NH4PH→NH4HSO3
NH4HSO3 NH4OH→(NH4)2S03?H2O
Ammonium bicarbonate method uses mother liquor or ammonia water absorption solution to absorb sulfur dioxide in sulfuric acid tail gas to prepare ammonium bisulfite solution. When the density of the absorption liquid phase reaches 1.30~1.32, it is sent to the neutralizer, and then ammonium bicarbonate is added to neutralize the reaction to the end point. After centrifugal separation and drying, the finished product of ammonium sulfite is prepared, and its
SO2 NH4OH→NH4HSO3
NH4HSO3 NH4HCO3→(NH4)2SO3?H2O CO2↑
2. the absorption method uses water or circulating mother liquor to absorb sulfur dioxide in the tail gas of sulfuric acid, and then reacts with ammonia (or ammonia water) to obtain liquid ammonium sulfite. Its
2NH3 SO2 H2O→(NH4)2SO3
Last Update：2024-04-10 22:29:15
Sulfurous acid,diammonium salt, monohydrate (8CI,9CI) - Introduction
AMMONIUM SULFITE is a chemical compound with the formula (NH4)2SO3 · H2O. The following is an introduction to the nature, use, formulation and safety information of AMMONIUM SULFITE:
Nature:
-ammonia sulfate is a colorless crystalline substance, usually showing a hexagonal crystal-based morphology.
-It has strong water solubility and dissolves quickly in water.
-It is a highly reductive compound that easily reacts with oxygen to produce gases such as sulfur dioxide.
Use:
- AMMONIUM SULFITE is often used as a chemical reagent, especially for the preparation of reducing agents and reducing couples in analytical chemistry.
-It can also be used in the water treatment process as a disinfectant to treat sewage.
-In some industrial fields, it is also used as a reducing agent in the textile industry and a raw material for the preparation of other sulfide compounds.
Preparation Method:
- AMMONIUM SULFITE is usually prepared by reacting AMMONIUM bisulfite solution with hypochlorous acid or hydrogen peroxide in dilute solution.
-The desired crystal form can be obtained by controlling the reaction conditions.
Safety Information:
- AMMONIUM SULFITE is easy to absorb moisture in moisture and should be stored in a dry and sealed container to avoid moisture and exposure to the air.
-It may produce dangerous reactions when it comes into contact with strong oxidants, and it is necessary to avoid contact with open flames and high temperatures.
-During handling and use, take appropriate personal protective measures, such as wearing gloves and goggles, and avoid direct contact with skin and eyes.
-When disposing of waste, local environmental regulations should be followed to ensure safe disposal.
Nature:
-ammonia sulfate is a colorless crystalline substance, usually showing a hexagonal crystal-based morphology.
-It has strong water solubility and dissolves quickly in water.
-It is a highly reductive compound that easily reacts with oxygen to produce gases such as sulfur dioxide.
Use:
- AMMONIUM SULFITE is often used as a chemical reagent, especially for the preparation of reducing agents and reducing couples in analytical chemistry.
-It can also be used in the water treatment process as a disinfectant to treat sewage.
-In some industrial fields, it is also used as a reducing agent in the textile industry and a raw material for the preparation of other sulfide compounds.
Preparation Method:
- AMMONIUM SULFITE is usually prepared by reacting AMMONIUM bisulfite solution with hypochlorous acid or hydrogen peroxide in dilute solution.
-The desired crystal form can be obtained by controlling the reaction conditions.
Safety Information:
- AMMONIUM SULFITE is easy to absorb moisture in moisture and should be stored in a dry and sealed container to avoid moisture and exposure to the air.
-It may produce dangerous reactions when it comes into contact with strong oxidants, and it is necessary to avoid contact with open flames and high temperatures.
-During handling and use, take appropriate personal protective measures, such as wearing gloves and goggles, and avoid direct contact with skin and eyes.
-When disposing of waste, local environmental regulations should be followed to ensure safe disposal.
Last Update：2024-04-10 22:29:15
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Spot supply
Product Name: Ammonium sulfite monohydrate Visit Supplier Webpage Request for quotationCAS: 7783-11-1
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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Raw Materials for Sulfurous acid,diammonium salt, monohydrate (8CI,9CI)
Downstream Products for Sulfurous acid,diammonium salt, monohydrate (8CI,9CI)