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Home > Catalyst and Auxiliary > Antioxidants > Sodium dithionite for Sale > Food Grade Sodium Hydrosulfite 85% Purity CAS 7775-14-6
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Food Grade Sodium Hydrosulfite 85% Purity CAS 7775-14-6

TDS 55 Inquiries

Unit Price: Get Latest Price
CAS No.:

7775-14-6

Port:

Shanghai

Packaging:

50kg Iron Drum

Sample Available:

Yes

Price valid (until):

2024-11-28

Company Type:
Trader
Location:
China
Payment Terms:
TT against copy of documents,D/P,L/C,D/A,O/A,TT against B/L draft before shipment,100% TT in advance
Average Lead Time:
10 days
Qualification:
Main Products:

Sodium Hydrosulfite,Sodium Percarbonate,NONIONIC SURFACTANT,VAT DYES

  • Product Description

  • Seller Information

  • Inquiry History

  • Description

    Product Description

    Purity 85% Sodium Hydrosulphite Food grade CAS 7775-14-6 Sodium hydrosulfite


    Product Name: Sodium Dithionite, Sodium hydrosulphite, Sodium hydrosulfite 85%

    Molecular formula: Na2S2O4

    Quality standard: GB 1886.46-2015

    IMO Class: 4.2

    UN NO.: 1384


    Application:

      According to GB 1886.46-2015, it can be used as bleach for candied fruits, dried vegetables, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms, 0.4g/kg. Refer to "09012 sodium sulfite" for SO2 residue. According to the residual chemicalbook limit specified in Japan (calculated by SO2, g/kg): dried fruit (excluding raisins) 2; Gelatin 0.5; Molasses, starch syrup 0.3; Fruit wine and miscellaneous wine 0.35; 0.15 natural fruit juice after 5 times dilution; Boiled beans 0.1; Shrimp 0.1; Qijian powder 0.9. Do not use on sesame, beans and vegetables.


    Specification:

    Items Specification
    Appearance White crystalline powder
    Purity Min 85%
    Water insoluble Max 0.1%
    Fe content Max 18ppm
    Zn content Max 1ppm
    Smell A little smell of SO2
    Water solution Clear transparent liquid
    Other heavy metals Max 1ppm
    Na2CO3 1.5~2.5%


    Storage:

      Sodium hydrosulfite powder shall be stored in a cool, dry, ventilated and covered warehouse to avoid direct sunlight. Keep away from heat sources and do not mix with water or steam. It shall not be mixed with oxidant or other inflammables. The bag mouth shall be tied up immediately and tightly after use and stored properly.


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    ECHEMI Editorial Reference
    Sodium dithionite is commonly known as insurance powder, also known as sodium hyposulfite, white crystalline powder or slightly yellow flaky crystals, odorless or with a slight smell of sulfur dioxide. It is very soluble in water and insoluble in alcohol. Its aqueous solution is unstable and belongs to a strong reducing agent. It is easy to absorb oxygen and oxidize when exposed to air, and it is also easy to absorb moisture and heat and deteriorate, and it can seize oxygen in the air to form agglomerates and emit a pungent sour smell. Sodium dithionite has two forms: dihydrate and anhydrous salt. Dihydrate is a slightly yellow flaky crystal with extremely unstable properties. It only exists in alkaline solution. When heated to a certain temperature, it will dehydrate and transform into anhydrous salt; anhydrous salt is a white crystalline powder and exists stably under room temperature drying. Heating sodium dithionite or contact with open flame will cause combustion, and the autoignition point is 250℃. Contact with water can release a large amount of hot sulfur dioxide gas and flammable sulfur vapor, causing violent combustion. When it encounters an oxidant, a small amount of water or absorbs humid air, it can generate heat, causing yellow smoke combustion, and even explosion. Sodium dithionite is toxic and irritating to the eyes and respiratory mucosa. Due to its properties, sodium dithionite can be used as an oxygen absorber in analysis, or as a dye intermediate and bleaching agent. It is also a strong reducing agent that can reduce many metal salts to metals.

    Certificates

    Basic Info
    Product Name:

    Sodium dithionite

    Other Name:

    Dithionous acid,sodium salt (1:2);Dithionous acid,disodium salt;Sodium dithionite;Vatrolite;Hydros;Blankit;Sodium dithionite (Na2(S2O4));Disodium dithionite;Disodium hydrosulfite;Sodium hydrosulfite;Sodium hyposulfite;Burmol;Sodium hydrosulfite (Na2S2O4);V-Brite B;Blankit IN;Hydrosulfite R Conc;Cyclanon ARC;Blankit S;Hydrosulfite F;Oxygen Scavenger SHS;Albite F;1340-77-8

    CAS No.:

    7775-14-6

    Molecular Formula:

    H2O4S2.2Na

    InChIKeys:

    InChIKey=PEXMEGQPKTWBOJ-UHFFFAOYSA-N

    Molecular Weight:

    174.1071

    Exact Mass:

    173.903

    EC Number:

    231-890-0

    UNII:

    2K5B8F6ES1

    ICSC Number:

    1717

    UN Number:

    1384

    DSSTox ID:

    DTXSID9029697

    Color/Form:

    White or grayish-white crystalline powder|Light-lemon-colored solid in powder or flake form|White, colorless or yellow-white crystals

    HScode:

    28311010

    Categories:

    Antioxidants

    Characteristics
    PSA:

    118.68

    XLogP3:

    0.391

    Appearance:

    White to grayish-white granular powder

    Density:

    2.19

    Melting Point:

    166-168 °C

    Boiling Point:

    1390°C

    Flash Point:

    >100°C o.c.

    Water Solubility:

    H2O: 250 g/L (20 °C)

    Storage Conditions:

    Materials to avoid: strong oxidizing agents, acids.

    Toxicity:

    LD50 orally in Rabbit: 2500 mg/kg

    Explosive limit:

    Closed containers may rupture violently when heated.

    Odor:

    Faint sulfurous

    Experimental Properties:

    Strong reducing agent; also available in liquid form|Decomposes violently when heated to 190 °C and emits toxic fumes of SOx and Na2O.

    Air and Water Reactions:

    Sodium dithionite is a combustible solid which slowly decomposes when in contact with water or water vapor, forming thiosulfates and bisulfites. This reaction evolves heat, which can further accelerate the reaction or cause surrounding materials to burn. If the mixture is confined, the decomposition reaction can result in pressurization of the container which may then rupture forcefully. Upon standing in air it slowly oxidizes, generating toxic sulfur dioxide gas. (NFPA, 2010)

    Reactive Group:

    Anhydrides

    Reactivity Alerts:

    Strong Reducing Agent

    Reactivity Profile:

    Sodium dithionite is a combustible solid which slowly decomposes when in contact with water or water vapor, forming thiosulfates and bisulfites. This reaction evolves heat, which can further accelerate the reaction or cause surrounding materials to burn. If the mixture is confined, the decomposition reaction can result in pressurization of the container which may then rupture forcefully. Upon standing in air it slowly oxidizes, generating toxic sulfur dioxide gas. (NFPA, 2010)

    Autoignition Temperature:

    about 190 °C

    Hazard Identification

    Classification of the substance or mixture

    Self- heating substances and mixtures, Category 1

    Acute toxicity - Category 4, Oral

    GHS label elements, including precautionary statements

    Pictogram(s)
    Signal word

    Danger

    Hazard statement(s)

    H251 Self-heating; may catch fire

    H302 Harmful if swallowed

    Precautionary statement(s)
    Prevention

    P235 Keep cool.

    P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...

    P264 Wash ... thoroughly after handling.

    P270 Do not eat, drink or smoke when using this product.

    Response

    P301+P317 IF SWALLOWED: Get medical help.

    P330 Rinse mouth.

    Storage

    P407 Maintain air gap between stacks or pallets.

    P410 Protect from sunlight.

    P413 Store bulk masses greater than … kg/…lbs at temperatures not exceeding …°C/…°F.

    P420 Store separately.

    Disposal

    P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

    Other hazards which do not result in classification

    no data available

    Handling and Storage

    Precautions for safe handling

    NO open flames. NO contact with combustible substances or water. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

    Conditions for safe storage, including any incompatibilities

    Dry. Well closed. Separated from strong oxidants and acids. Store in an area without drain or sewer access.

  • Seller Information
    Business Type:

    Trader

    Main Products:

    Sodium Hydrosulfite,Sodium Percarbonate,NONIONIC SURFACTANT,VAT DYES

    Location:

    Room 6921, 6th Floor, 396 Fute East 1st Road, China (Shanghai) Pilot Free Trade Zone

    Payment Terms:

    TT against copy of documents,D/P,L/C,D/A,O/A,TT against B/L draft before shipment,100% TT in advance

    Average lead Time:

    10 days

    Total Annual Revenue:

    $25 million-$50 million

    Total Employees:

    11-50

    Year of Establishment:

    2018

    ZHANJIU (Shanghai) INDUSTRIAL Co., Ltd is a professional supplier of fine chemicals for many industry fields, specializing for chemicals widely used in textile printing & dyeing, leather processing, water treatment, food & feed additives, pharmaceuticals and other areas. We have own long-term cooperative manufactures especially for sodium hydrosulfite, sodium percarbonate, sodium metabisulfite and surfactants etc. With support from and trustable & very good partnership with the manufacturers, so we can offer very competitive prices and good quality to support our customers all over the world. We can guarantee the good service, good quality, efficent delivery time and competitive price to our customers.

    Our cooperative factory for sodium hydrosulfite has capacity of 100, 000 metric tons per year, we also produce sodium metabisulfite and sodium formate etc.

    Our cooperative factory for sodium percarbonate is located in North China with capacity of 150, 000 metric tons per year. We also produce thiourea Dioxide and C-12 Alcohol Ester each with capacity of 50, 000 metric tons.

    Our cooperative production factory for surfactants is located in Shandong province. With an annual production capacity of 100, 000 tons. The surfactants produced by our cooperative factory are widely used in textile industries, leather industries, coatings, inks and other fields.

    We also distributesodium gluconate, sodium acetate trihydrate, Trichloroisocyanuric Acid, Oxalic acid, formic acid etc., Based on our good relationships with manufacturers. Please find more information about our products on line.

    We always try best to provide our customers with the most qualified products, best services, the most immediate response and the most satisfactory cooperation with our most professional and serious attitude. We hope to establish long-term good faith cooperation with customers all over the world. Please feel free to send us email . Thanks!

  • Inquiry History
    55 Inquiries
    Country Product Purchase Quantity Date Posted
    Turkmenistan

    Sodium Hydrosulfite 88%

    20 MT Apr 10, 2026
    Pakistan

    Sodium Hydrosulfite (88%)

    1 20' Fcl Sep 11, 2026
    Pakistan

    Sodium Hydrosulfite

    1 20' Fcl Aug 25, 2026
    Bangladesh

    hydrose 88%

    100 MT Jul 23, 2026
    Germany

    Sodium Hydrosulfite

    10 MT Jun 18, 2026
    Bangladesh

    Sodium Hydrosulfite

    22500 KG Jun 3, 2026
    India

    SODIUM HYDRO SULPHITE

    500 KG Jun 1, 2026
    Kenya

    Sodium Hydrosulfite

    20 20' Fcl Feb 27, 2026
    Nigeria

    sodium hydrosulfite

    1 KG Feb 3, 2026
    Nigeria

    sodium hydrosulphite

    1 KG Feb 2, 2026
    Egypt

    sodium hydrosulfite 90 %

    22000 KG Jan 13, 2026
    Pakistan

    Sodium Hydrosulfite

    2.00 20' Fcl Dec 30, 2025
    Pakistan

    Sodium Hydrosulfite

    240000 KG Dec 29, 2025
    Malaysia

    Sodium Hydrosulphite

    1 20' Fcl Dec 3, 2025
    United Arab Emirates

    Sodium HYDROSULPHITE 92 %

    100.00 MT Nov 10, 2025
    Pakistan

    Sodium Hydrosulfite 90%

    10 20' Fcl Nov 4, 2025
    Spain

    Sodium Hydrosulfite

    5400 PCS Nov 3, 2025
    United Arab Emirates

    Sodium HYDROSULPHITE 92 %

    100.00 MT Oct 9, 2025
    Bangladesh

    SODIUM HYDROSULPHITE - 88% MIN ( 50 KG BLUE IRON DRUM )

    44 MT Aug 15, 2025
    Australia

    Sodium Hydrosulfite 88%

    1 BOU Aug 11, 2025
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