Sulphite Solutions
Grade: Industrial / Photographic Grade
High Volume Demand
Ammonium Sulphite Solution - 40%
High-purity neutral-alkaline Ammonium Sulphite 40% solution. Key formulation for photographic developers, pulp pulping, flue gas desulphurization, and chemical synthesis.
CAS:
10196-04-0
Formula:
(NH4)2SO3
Mol. Wt:
116.14 g/mol
Commercial Supply Inquiry
Free Batch COA & Technical Data Sheet
Bulk Tanker & Containerized Sea Freight
Direct Manufacturer Guarantee (Est. 1984)
Assay / Concentration
38.0% - 41.0% (w/w)
Specific Gravity
1.18 - 1.22 @ 25°C
pH Value (Neat)
7.0 - 9.0
Physical State
Aqueous Liquid
Product Overview & Chemical Characteristics
Ammonium Sulphite Solution 40% [(NH4)2SO3] is a neutral to mild alkaline sulphite liquid. Unlike bisulphites, it operates at pH 7.0 - 9.0, making it invaluable for systems where acidic conditions are unacceptable.
Produced with high stoichiometric precision, it is extensively used in photography, specialty pulp bleaching, gas scrubbers, and industrial synthesis.
Technical Data Sheet (TDS) & Specifications
Typical factory batch parameters verified by in-house laboratory
| Parameter / Property | Guaranteed Specification |
|---|---|
| Chemical Name | Ammonium Sulphite Solution - 40% |
| Chemical Formula | (NH4)2SO3 |
| CAS Registry Number | 10196-04-0 |
| Physical Appearance | Clear, colorless to very pale yellow liquid with mild ammoniacal odor |
| Active Assay / Content | 38.0% - 41.0% (w/w) |
| Specific Gravity @ 20°C | 1.18 - 1.22 @ 25°C |
| pH Value (Neat) | 7.0 - 9.0 |
| SO2 Content Equiv. | 21.0% - 23.5% |
| Chemical Formula | (NH4)2SO3 |
| Assay (as Ammonium Sulphite) | 38.0% - 41.0% |
| HSN Code | 2832 1010 |
| Specific Gravity @ 25°C | 1.18 - 1.22 |
| pH Value | 7.0 - 9.0 |
| Insoluble Matter | Nil |
| Standard Packaging | 250 kg HDPE Drums, 1000L IBC Tanks, Bulk Tanker |
Primary Applications & Field Deployments
Photographic developer fixing bath formulation
Sulphite pulping & wood chips treatment in paper mills
Flue gas desulphurisation (FGD) wet scrubbers
Oxygen scavenger in alkaline boiler systems
Intermediate for agrochemicals and ammonium thiosulfate
Industries Served
Photography & Imaging
Pulp & Paper Manufacturing
Flue Gas Treatment & Environmental Control
Boiler & Steam Systems
Agrochemical Synthesis
Packaging Formats & Storage Guidelines
HDPE Drums
50 kg carboys and 250 kg UN-approved virgin polymer drums. Leak-proof sealed with tamper evident bungs.
1000L IBC Tanks
Heavy duty galvanized steel cage IBC totes (1000 Litres / ~1.35 Metric Tons net). Stackable for sea shipping.
Road Tankers
Bulk tanker loads (20 to 30 Metric Ton capacity) with dedicated acid/bisulphite linings for domestic Indian dispatch.
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