Ammonium Sulfite Monohydrate (CAS 7783-11-1) Comprehensive User Guide
Table of Contents
1. Product Overview & Specifications
Ammonium sulfite monohydrate (CAS 7783-11-1) is a white crystalline compound with formula (NH4)2SO3·H2O, widely used as reducing agent and oxygen scavenger.
Technical Parameters:
| Parameter | Specification | Ammonium Sulfite | Sodium Sulfite |
|---|---|---|---|
| Molecular Weight | 134.15 g/mol | 134.15 | 126.04 |
| Solubility (Water) | 270 g/L (20°C) | High | Moderate |
| pH (1% Solution) | 8.5-9.5 | Alkaline | Neutral |
2. Key Applications & Industrial Uses
Primary Functions:
- Water Treatment: Oxygen scavenger in boiler systems
- Photographic Industry: Developing agent in fixer solutions
- Agriculture: Soil amendment for sulfur-deficient crops
- Pharmaceuticals: Intermediate in API synthesis
- Chemical Manufacturing: Precursor for sulfur-containing compounds
3. Step-by-Step Usage Guidelines
Water Treatment Protocol:
- Test system water for dissolved oxygen content
- Dilute to 5-10% solution concentration
- Inject at 2-5 ppm per liter of feedwater
- Monitor residual sulfite levels (maintain 20-40 ppm)
4. Real-World Application Cases
Case 1: Power Plant Boiler Protection
500MW coal-fired plant reduced corrosion rates by 68% through continuous injection of 3.2 tons/month ammonium sulfite monohydrate.
5. Verified Customer Success Stories
| Client | Industry | Results |
|---|---|---|
| Shanghai Petrochemical Co. | Oil Refining | 42% reduction in pipeline maintenance costs |
| Hefei Photographic Materials Ltd. | Chemical Manufacturing | 25% improvement in developer solution stability |
6. Technical Consultation & Quotation
Contact our chemical experts for:
- Bulk pricing (25kg bags to ton containers)
- Custom concentration formulations
- Technical support: info@vivalr.com
- Direct line: (86) 15866781826



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