Product Feature
Odor: Slight irritative.
Specific Gravity: Unavailable
Solubility: Soluble in water.
Density: 2.19
pH: 6-7
pH Test-Method: PH test paper.
% Volatiles by volume @ 21C (70F): 0
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.
Application
1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching .
2. bleaching paper pulps , especially mechanical pulps, its the most fittable bleaching agent in pulps.
3. bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products,
4. in mineral, the compound of thiourea and other sulphides.
5. as reducing agent in chemical industry.
6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent and preservative dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms.
Packaging 50kg/100kg net in iron drums with double PVC bags
Product Specification/Models
NDEX 90%, 88%, 85%. FOOD ADDITIVE
Na2S2O4, 90%, 88%, 85%, Fe 20ppm ZincZnOther heavy metal
calculated as Pb, 1ppm
Water Insolubles05%
Shelf Life(month)12
Sodium hydrosulfite, also known as sodium dithionite, is a powerful reducing agent widely used in industrial applications. Its primary function is as a bleaching agent in the textile and paper industries, where it effectively removes color from fabrics and paper pulp, making it crucial for achieving white and colorfast textiles and paper products. Additionally, sodium hydrosulfite is employed in various chemical processes, such as in the production of certain polymers and in water treatment to remove excess chlorine. Its remarkable reducing properties, which allow it to decolorize and dechlorinate, make sodium hydrosulfite a valuable chemical compound in multiple industrial sectors.
Product Feature
Odor: Slight irritative.
Specific Gravity: Unavailable
Solubility: Soluble in water.
Density: 2.19
pH: 6-7
pH Test-Method: PH test paper.
% Volatiles by volume @ 21C (70F): 0
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.
Application
1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching .
2. bleaching paper pulps , especially mechanical pulps, its the most fittable bleaching agent in pulps.
3. bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products,
4. in mineral, the compound of thiourea and other sulphides.
5. as reducing agent in chemical industry.
6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent and preservative dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms.
Packaging 50kg/100kg net in iron drums with double PVC bags
Product Specification/Models
NDEX 90%, 88%, 85%. FOOD ADDITIVE
Na2S2O4, 90%, 88%, 85%, Fe 20ppm ZincZnOther heavy metal
calculated as Pb, 1ppm
Water Insolubles05%
Shelf Life(month)12
Sodium Hydrosulfite 90 technical grade is widely used in the textile industry for reducing dyeing reduction cleaning printing and decolorization and as a bleaching of silk wool nylon and other fabrics It can also be used in organic synthesis such as dyes pharmaceuticals as a reducing agent or bleach Sodium Hydrosulfite is the most suitable bleaching agent for wood pulp paper Its used for chemical processing cleaners gas purification and environmental improvement
Sales Specification
Assay 9000 Min
Appearance White crystalline powder
Na2CO3 Sodium Carbonate 150 250
Na2S2O3 Sodium Thiosulfate 050 150
Na2S2O5 Sodium Metabisulfite 350 700
HCOONa Sodium Formate 150 250
Fe Iron 18 ppm Max
Water Insoluble 010 Max
Total other heavy metals 10 ppm Max
Package
22046 LB Drum 612 drums per pallet
DOT Transportation
UNNA 1384
Proper Shipping Name Sodium Dithionite
Hazard Class 42
Packing Group II
ITEM UNIT STANDARD ACTUAL DATA
Sodium Hydrosulphite % 88 min 88.2
Water insoluble % 0.1 max 0.06
Sodium thiosulfate: Na2S2O3 % 1.2 max 0.7
Sodium metabisulfite: Na2S2O5 % 5-7 6
Sodium bisulfite:NaHSO3 % 0.5 max 0.4
Sodium carbonate: Na2CO3 % 0.6-2 1.5
Sodium formate: HCOONa % 0.5 max 0.3
Zn % 0.0001 max 0.00009
Fe % 0.005 max 0.004
1.Molecular formula: na2s2o4
2.Appearance: white free-flow crystal powders
3.Standard:hg2074-2004, jisk1476-1995, hg/t2682-1995
4.Index 90% 88% 85% food additive
5.Packing£º15kg, 25kg , 50kg or 100kg net in iron drums with double inner polybags.
6.Usage: 1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching .
2. It is also used in bleaching paper pulps , especially mechanical pulps, it¡¯s the most fittable bleaching agent in pulps.
3. It is used in bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products,
4. It is used in mineral, the compound of thiourea and other sulphides.
5. It is used as reducing agent in chemical industry.
7. Specification:
Sodium hydrosulfite
Purity: 88% min.
Water insoluble: 0.2% max.
Specific gravity: 2.36/real; 1.2/bulk
Temperature of explosion: 190℃
Solubility: 21.8%(20℃)
Packing in 50kgs plastic woven bags
1*20'fcl = 20 mt
Sodium Hydrosulfite, Payment Terms : T/T, Bank or Wire Transfer Upfront Upon Proforma Invoice Pricing, Total or Minimum order Quantity , Quality and Delivery time get back to us so we can provide all those for you if interested. Regular others also have added advantages, Bulk orders as well.
Other names:Sodium dithionite hydrate; Sodium hydrosulphite; Sodium dithionite; disodium dithionite
MF:Na2O4S2
Properties: white crystalline powder
Solubility: easily soluble in water, insoluble in alcohol
Storage methods: Should be stored in a cool, ventilated, dry. The characteristic of moisture proof, prevent sun direct illuminate, away from the fire, not contact with water or water vapor phase, not with oxidant during storage or other flammable items. Immediately after use to insert mouth, build and properly kept.
Main purpose: Widely used in printing and dyeing industry, such as cotton fabric dye and silk wool fabric bleaching. Also used in medicine, mineral processing, copperplate printing. Papermaking industry used as a bleaching agent, etc. Used as a bleaching agent, preservative, antioxidant food grade products.
Product Name: Sodium Hypophosphite
CAS No.: 7681-53-0
Chemical Formula: NaH PO·H-O
Appearance: White crystalline powder
Grade: Industrial / Electronic grade available
--Product Description
Sodium Hypophosphite is a powerful reducing agent mainly used in electroless nickel plating (ENP) and various chemical synthesis processes. It offers strong reducing capacity, thermal stability, and solubility in water, making it ideal for electronics, surface finishing, catalysis, and even flame retardant formulations.
Its high reactivity and purity make it essential for metal surface treatment, especially in non-cyanide plating baths.
-- Key Applications
Electroless Nickel Plating (ENP)
As the primary reducing agent in metal surface finishing; allows uniform nickel deposition without electricity.
Reducing Agent
In pharmaceutical, agrochemical, and fine chemical synthesis.
Flame Retardant
Intermediate in production of phosphinate-based flame retardant additives.
Catalysis / Stabilization
Acts as a catalyst stabilizer in certain polymer and resin systems.
-- Product Advantages
High Reduction Efficiency: Ideal for electroless plating with excellent control.
Water-Soluble & Stable: Easy to handle and compatible with aqueous formulations.
High Purity: Low metal and sulfate content for precise applications.
Reliable Performance in Electronics: Widely used in circuit board and semiconductor finishing.
Versatile Reactivity: Suitable for advanced chemical synthesis processes.
-- Packaging & Storage
25kg plastic-lined woven bags.
500kg or 1000kg jumbo bags available for bulk orders.
Store in a cool, dry, well-ventilated area.
Avoid direct sunlight and moisture.
Shelf life: 12 months in original sealed packaging.
-- Delivery & Handling
Non-hazardous, but avoid moisture and heat during transport.
Custom labeling and OEM services available.
Standard delivery time: 7-10 working days.
jinhe sodium hydrosulfite factory co.,ltd, the largest manufacture of sodium hydrosulfite in China. With an annual output of forty thousand tons of sodium hydrosulfite. the products are mainly exported to more than 40 countries and regions, such as Africa, Southeast Asia, America and Europe.
Our main products including: sodium hydrosulfite,sodium metabisulfite.
Sodium hydrosulfite Specification ï¼?85%ã??88%ã??90%.
Packing:15kgã??20kgã??25kgã??50kgã??100kgã??200kgã??900kg net new iron drum.
We are the largest manufacture of sodium hydrosulfite in China. With an annual output of forty thousand tons of sodium hydrosulfite. the products are mainly exported to more than 40 countries and regions, such as Africa, Southeast Asia, America and Europe.
Product name: sodium hydrosulfite,sodium hydrosulphite Sodium dithionite.
Sodium hydrosulfite Specification 85% 88% 90%.
Packing:15kg 20kg 25kg 50kg 100kg 200kg 900kg net new iron drum.
