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Powder Industrial Grade Sodium hydrosulfite

  • 7775-14-6

  • Industrial grade

  • Na2O4S2

  • 174.10700

  • 2831101000

  • Sodium hydrosulfite

  • Sodium dithionite hydrate


1. Introduction of Sodium Hydrosulfite

Chemical Name

Sodium Hydrosulfite



Molecular Formula


Molecular Weight




2. Properties of Sodium Hydrosulfite

Appearance & Physical State

White crystalline powder

Melting Point

300℃ (dec.)

Boiling point


Water soluble

250 g/L (20℃)

3. Chemical Analysis Certificate


Product name:

Sodium sulphate Anhydrous


Expire date



Manu. date


Lot number




质量指标 Specification

测定结果 Result







钙镁含量以Mg计Ca,Mg(As Mg)%



氯化物以Cl计Chloride (as Cl)%















Physical and chemical properties: Properties White crystalline powder.
Relative density: 2.3~2.4
Solubility: Highly soluble in water, insoluble in alcohol.


 50kg/bag         450bags/20fcl            22.5mts/20fcl

4. Security

Oral LD50:600-700mg /kg (S02) for rabbits. ADI 0 ~ 0.70 mg/kg (in S02, including total ADI} of S02 and sulfite FAO/WHO, 1999).

Use Uchimura polyethylene plastic bags (plastic bags should be double pierced), sealed tightly stamped iron drum packaging, iron sheet thickness is not less than 0.7 mm. The net weight of each barrel is 50kg. It is a second-class water-burning article, hazardous code number: GB4.2 class 420120 UN N0.13840 IMDGCODE page 4262, class 4.2 (domestic according to 4.3 class 43041 treatment). It should be stored in a cool, ventilated and dry warehouse. Prevent moisture, prevent direct sunlight, away from fire, do not contact with water or steam, do not store and transport with oxidants or other flammable goods. Tie and cover the mouth immediately after use and keep it properly. When fire, do not use water, need to use sand, carbon dioxide clamour to fight. Toxicity and dosage: Food grade products according to the national standard GB 2760-86 provisions: used as bleaching agent for sugar, candy, cookies, canned, bamboo shoots, mushrooms, etc., dosage is 0. 4G /kg. For residual amount, see anhydrous sodium sulfite.


Uses: mainly used as reducing agent for printing and dyeing, bleaching agent for pulp, linen, oil, etc., and for pharmaceutical, analytical reagents, etc

Sodium hyposulfite is more reductive in sulfite bleach. The maximum amount used for preserves, dried fruits, dried vegetables, vermicelli, glucose, sugar, crystal sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms is 0.40g /kg. The residual amount is measured by sulfur dioxide, bamboo shoots, mushrooms and canned mushrooms shall not exceed 0.5 5g/kg; Sugar, vermicula and other varieties shall not exceed 0.1g /kg; Liquid glucose shall not exceed 0.2g /kg; Candied fruit shall not exceed 0.05g /kg. Residual content of potato powder (S02) ≤0. 05g/kg.

Product Specification

Please click Contact Us or Email directly to info@hiseachem.com to get the latest specification.

Our services

Quality Control

Qingdao Hisea Chem is a company that focus on delivery reliable and high-quality products. Our analytical laboratory equipped with advanced apparatus as well as a professional chemist team that ensure our product meet your criteria. After you confirmed your order, we make sure your goods will be delivered with the corresponding certificate of analysis (CoA). For more details of our product CoA, Check Products or talk to one of our sale representative.

Quotation & Payment

Qingdao Hisea Chem offer competitive price to our customer. We offer Free on Board (FOB), Cost, Insurance, and Freight (CIF) price to your designated port. Payment options is flexible with Hisea chem, our company have gained great confidence with difference banks all around the world. Email us if you have questions about our quotation and payment policy.

Shipment & After sale service

After over 20 years on global trade, Qingdao Hisea Chem has formed a mature international trade logistics chain. For most of our products, we offer “door to door service”, our professional team gives you this “one-stop” service to save your time and increase your purchase experience.


Q: What's your advantage? Why choose you?

A: More than 10 years experienced of production chemical production. We have the most professional techniques and team. Great production capacity Sustainable Supply. According to customer requirements, we support the customized.

Q: What's the payment?

A: T/T would be better with quick transfer and few bank. LC could also be accept, but the proceure is complex and the fee is high. You can also use Western Union. For large quantity, sea shipping can be provided.

Q: Are you a factory or trading company?

A: We are a professional manufacturer. We are warmly welcome clients from worldwide to visit our factory and cooperate with us.

Q: How can i get some samples?

A: We are honored to offer you samples. New clients are expected to pay for the courier cost,the samples are free for you.

Q: When can i get the price?

A: We usually quote within 24 hours after we get your inquiry. If you are urgent to get the price, Please tell us in your email so that we will regard your inquiry priority.

Q: Where is your factory located?

A: Our factory is located in Qingdao,China.

Q: What is your sample policy?

A: Some of our samples are available for free,while others are available at a cost.

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