Chemical Name : Sodium Sulfite 98%Min.
Formula : NA2SO3
Cas No. : 7757-83-7
UN No. : UN 1384
Package : 25Kg/Bag -1,000Kg/JUMBO Bag
Origin : China, Germany, S.Korea, Thailand, Japan
Category : Leather tannery, Waster water treatment, Paper Manufacturing..
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Sodium Sulfite is a white crystalline inorganic chemical widely used as a reducing agent, preservative, oxygen scavenger, and processing aid in multiple manufacturing industries. Its strong ability to remove dissolved oxygen and reduce metal ions makes it essential in leather processing and industrial wastewater treatment.
| Application | Role | Benefits |
|---|---|---|
| Chrome Tanning Process | Enhances chromium exhaustion and fixation | Improves tanning efficiency & leather softness |
| Leather Preservation | Prevents oxidative damage during processing | Extends hide quality and improves appearance |
| Dyeing Assistance | Maintains controlled reducing conditions | Enhances dye stability & brightness |
Sodium Sulfite is used to reduce toxic Chromium (VI) to Chromium (III) (less harmful, stable, and easier to remove).
✔ Essential in:
Leather production (anti-Chromium VI reversion treatment)
Chrome-based finishing processes
Environmental regulations compliance
Advantages
Strong and fast reduction capability
Helps achieve lower Cr(VI) content in final leather products
Enhances workplace and consumer safety
| Function | Benefits |
|---|---|
| Oxygen Scavenger | Prevents corrosion in pipelines & reduces oxygen stress on microorganisms |
| Metal Ion Reducer | Converts harmful oxidized metals into removable forms |
| Dechlorination Agent | Removes residual chlorine from industrial water and treated effluents |
Result: Stabilized water quality, improved biological treatment efficiency, and reduced toxicity before discharge.
| Industry | Usage |
|---|---|
| Paper & Pulp | Bleaching agent and antioxidant to prevent fiber discoloration |
| Photographic Processes | Component of developing solutions (reducing action) |
| Chemical Manufacturing | Intermediate for sodium thiosulfate and sodium bisulfite |
| Food Additives (Controlled & Regulated Use) | Preservative and antioxidant to prevent browning & spoilage |
| Gas Treatment | Removes trace oxygen from boiler feed water and flue gas streams |
Strong reducing capability
Cost-effective oxygen scavenger
Helps achieve environmental compliance
Widely compatible with tannery and water treatment systems
Store in dry conditions away from acids (may release SO₂ gas)
Use appropriate protective equipment during handling
Follow local regulations for use in food-related applications
NGHI SON CHEMICALS IMPORT EXPORT COMPANY LIMITED
Head office:
P7-38.OT09 ("Officetel") Vinhomes Central Park, 720A Dien Bien Phu Street, Thanh My Tay Ward, Ho chi minh city, Vietnam 70000
License/Tax Code : 0312824002
Tel: +84-28-36208490
Fax : +84-28-36208492
Website: https://www.nghisonchemical.com
Email : Nghisonchem@nghisonchemical.com
Nscchem@nghisonchemical.com
Nghisonchem@gmail.com
Fact. No.1 :
Lot A5-1, D9 Street, Rach Bap IP, An Tay Commune, Ben Cat District, Binh Duong Province, Vietnam.
Warehouse No.1 :
No. 7 Street, Hai Son IP, Duc Hoa Ha Commune, Duc Hoa Ward, Long An Province
Warehouse No.2 :
Lot D, No.6-8 Street, Song Than IP, Di An Ward, Hochiminhcity, Vietnam
Warehouse No.3 :
No. 10, Song Than IP, Di An ward, Hochiminhcity, Vietnam
