High Quality Sodium Hydrosulfite CAS 7775-14-6

Short Description:

• It is an inorganic substance, white crystalline powder.

• Chemical formula: Na2S2O4

• CAS number: 7775-14-6

• Solubility: Easily soluble in water, insoluble in ethanol.

• Uses: Mainly used as reducing agent for printing and dyeing, bleaching agent for pulp, oil, etc., and for pharmaceuticals, analytical reagents, etc.

Product Detail

Product Tags

Technical indicators

Specification Tolerance Result
Purity(wt%) 88min 88.45
Na2CO3(wt%) 1.5-2.5 2.23
Na2S2O3(wt%) 0.8-1.5 0.92
Na2S2O5(wt%) 3.5-5.5 4.32
HCOONa(wt%) 1.5-2.5 1.63
Fe(ppm) 18max 10.2
Water Insolubles 0.1% max 0.05%
Total other heavy metals 10ppm max 8ppm

Product Use Description

Sodium hydrosulfite is widely used in the textile industry as a reducing agent for vat dyeing, vat bleaching agent, vat dye printing auxiliary, silk refining and bleaching agent, stripping agent for dyed matter and cleaning agent for dyeing vats, etc.
It is used as a bleaching agent for mechanical pulp, thermomechanical pulp and deinked pulp in the papermaking industry. It is the most suitable bleaching agent for wood pulp and papermaking.
As a reductive bleaching agent, sodium hydrosulfite is widely used in the bleaching of kaolin, the bleaching and reductive whitening of fur, the bleaching of bamboo products and straw products, etc.
It is used in ore dressing, synthesis of thiourea and its sulfide, etc.
Used as a reducing agent in the chemical industry.

Food additive sodium hydrosulfite is used as bleaching agent, preservative, and antioxidant in the food industry, and is widely used as candied fruit, dried fruit, dried vegetables, vermicelli, glucose, table sugar, rock sugar, maltose, candy, liquid glucose, bamboo shoots, Bleach and food preservation agent for mushrooms and canned mushrooms.

Product packing

Sodium Hydrosulfite1

It is packaged in a tightly sealed iron drum lined with double-layer plastic bags (the plastic bags should be double-tied).
25kg, 50kg, 100kg.
50kg/Drum; 22MTS/20'container.
Palletized 50KGS Drum; 18MTS

Our services

1. It can support multiple payment methods TT, OA, LC, DP, etc.
2. The fastest delivery can be within seven days, to the port of China.
3. If you are not satisfied with the product and service, you can return it.
4. Our company has passed SGS field certification inspection.


 Can we print our logo on the product ?
Of course, we can do it. Just send us your logo design.

Do you accept small orders ?
Yes. If you are a small retailer or starting up business,We are definitely willing to grow up with you. And we are looking forward to co-work with you for a long term relationship.

How about the price? Can you make it cheaper ?
We always take the customer's benefit as the top priority. Price is negotiable under different conditions, we are assuring you to get the most competitive price.

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