Sodium Hydrosulfite

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

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

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

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

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.