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.
Commodity: Sodium Hydrosulfite Other name: Synonyms: Sodium Hydrosulphite; Sodium Dithionite; Dithionous acid, Disodium salt; Sodium Sulfoxylate CAS No.: 7775-14-6 Molecular Weight: 174.10 Chemical Formula: Na2S2O4 Product Description Appearance: White, crystalline powder. 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
Chemical formula:Na2S2O4 molecular weight:174.108 CAS:7775-14-6 EINECS:231-890-0 Appearance:white crystalline powder Melting point:52 to 55 Water solubility:freely soluble
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
Classification: Sodium Hydrosulphite 85%/88%/90% CAS No.: 7775-14-6 Other Names: Sodium Hydrosulphite MF: Na2S2O4 EINECS No.: 231-890-0 Place of Origin: ShanDong China (Mainland) Grade Standard: Industry Grade Purity: 85%/88%/90% Appearance: white power other purity: 85% min
Sodium hydrosulphite factory sinongolia(dot com)co., ltd sodium hydrosulfite producer supplier, dyeing and printing industry plant, sodium hydrosulfite manufacturer, china dyeing agent producer sodium hydrosulfite supplier & manufacturer producing plant , supplier: 50kgs net weight iron drum
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: 8. H. S. Code: 28311000 9. Cas no.: 7775-14-6
Na2S2O4: 90%, 88%, 85% Fe: 20ppm Other heavy metal calculated as Pb: 1ppm Water Insolubles: 0.05%. 50kg iron drum; 21-22.2MT/20¡¯FCL without pallet.
Na2S2O4%=85%,88%,90%. 15kg,50kg,100kg,900kg/drum.
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
