Sodium Hydrosulfite

Sodium Hydrosulfite

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Sodium Hydrosulfite

Hazard Class: 4.2
UN NO. : UN1384
Synonyms :  Disodium salt; Sodium Sulfoxylate
CAS No.: 7775-14-6
Molecular Weight: 174.10
Chemical Formula: Na2S2O4

Product Detail

Product Tags

Company profile

Business Type : Manufacturer/Factory&Trading Company
Main Product : Magnesium Chloride Calcium Chloride,Barium Chloride,
Sodium Metabisulphite, Sodium Bicarbonate
Number of Employees : 150
Year of Estabulishment : 2006
Management System Certification: ISO 9001
Location : Shandong,China(Mainland)

Basic information

Hazard Class: 4.2
UN NO. : UN1384
Synonyms : Disodium salt; Sodium Sulfoxylate
CAS No.: 7775-14-6
Molecular Weight: 174.10
Chemical Formula: Na2S2O4

Physical and chemical property

Appearance: White, crystalline powder.
Odor: Slight irritative.
Specific Gravity: Unavailable
Solubility: Soluble in water.
Density: 2.19
PH: 6-7
Boiling Point: Not applicable.
Melting Point: >300 C Decomposes.
Vapor Pressure (mm Hg): No information found.
Bulk Density: ~0.9
Evaporation Rate (BuAc=1): No information found.

Product details


Na2S2O4 90% 88% 85% 85%
Fe 20ppm 20ppm 20ppm 20ppm
Zinc(Zn) 1ppm 1ppm 1ppm 1ppm
Other heavy metal
(calculated as Pb)
1ppm 1ppm 1ppm 1ppm
Water Insolubles 0.05% 0.05% 0.05% 0.05%
Shelf Life (month) 12 12 12 12

Flowchart of Sodium Hydrosulfite

Sodium Hydrosulfite


1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching.
2. Used in bleaching paper pulps, especially mechanical pulps, it’s the most fittable bleaching agent in pulps.
3. Used in bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products.
4. Used in mineral, the compound of thiourea and other sulphides.
5. Used as reducing agent in chemical industry.
6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent and preservative in dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms.

Primary Competitive Advantages

Small Oders Accepted Sample Available
Distributorships Offered Reputation
Price Quality Prompt Shipment
International Approvals Guarantee / Warranty
Country of Origin, CO/Form A/Form E/Form F...

Have more than 10 years professional experience in the production of Sodium Hydrosulfite;
Small trial order is acceptable , free sample is available;
Provide reasonable market analysis and product solutions;
To provide customers the most competitive price at any stage ;
Low production costs due to local resource advantages and low transportation costs
due to proximity to the docks,ensure competitive price.

Main Export Markets

Asia Africa Australasia
Europe Middle East
North America Central/South America


General packaging specification: 25KG,50KG;500KG;1000KG,1250KG Jumbo Bag;
Packaging Size : Jumbo bag size: 95 * 95 * 125-110 * 110 * 130;
25kg bag size: 50 * 80-55 * 85
Small bag is a double-layer bag,and the outer layer have a coating film ,which can effectively prevent moisture absorption. Jumbo Bag adds UV protection additive,suitable for long distance transportation,as well as in a variety of climated.

Payment & Shipment

Payment Term: TT, LC or by negotiation
Port of Loading : Qingdao Port,China
Lead time : 10-30days after confirming the order

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