Na2s2o4 Food Grade Manufacturer Pure 90% Sodium Hydrosulfite CAS 7775-14-6

• CAS No.: 7775-14-6
• Formula: Na2s2o4
• EINECS: 231-890-0
• Certification: CCIC, CIQ, ISO
• Purity: 90%
• Type: Sodium Hydrosulfite
• Model NO.: zhd0001-25
• Appearance: Powder
• Grade Standard: Industrial or Food Grade
• Un No: 1384
• Other Names: Sodium Dithionite
• Applications: Textile/Metallurgica/Medicine-Making/Papermaking
• Density: 2.189 G/Cm³
• Transport Package: Iron Drum
• Specification: 50kgs/Drum
• Trademark: ZHD or Customable
• Origin: China
• HS Code: 2831101000
• Production Capacity: 15000ton/Per Year

Product Description

Product Parameters

                                                                           Sodium Hydrosulfite

CAS NO.	7775-14-6	HS.CODE	28311010
EINECS NO.	231-890-0	HAZARD CLASS	4.2
UN NO.	1384	Storage Condition	Store at +5°C to +30°C
APPEARANCE	White to Gray-White crystalline powder
Odor	Odorless or a slight odor of SO2 gas
Solubility	Easily Soluble in Water, Insoluble in Ethanol
Standards Code Conformed	HG/T2074-2011 for industrial use
Stability	Stable, but air sensitive. Incompatible with strong acids, strong oxidizing agents, water, moisture.
Sensitive	Moisture Sensitive
Use	Mainly used as printing and dyeing reducing agent, Pulp, hemp, oil and other bleaching agents, and for pharmaceutical, Analytical reagents, etc

Na2 S2 O4
Grade of Quality	Superior G.	First G.	Qualified G.
Percentage of Sodium Hydrosulfite(Na2S2O4 ) Content	≥90%	≥88%	≥85%
Water Insoluble	≤0.1%	≤0.1%	≤0.3%
Sodium Thiosulfate(Na2S2O3)	≤1.0%	≤1.3%	≤1.5%
Sodium Metabisulfite(Na2S2O5)	5-7%	5-7%	5-7%
Sodium Bisulfite(NaHSO3)	≤0.5%	≤0.5%	≤0.5%
Sodium Carbonate(Na2CO3)	0.6-2%	0.6-2%	0.6-2%
Sodium Formate(HCOONa)	≤0.5%	≤0.5%	≤0.8%
Zn	≤0.0001%	≤0.0001%	≤0.0001%
Pb	≤0.0001%	≤0.0001%	≤0.0001%
Fe	≤0.005%	≤0.005%	≤0.005%

Packaging

Outer Package: Iron Drum

Inner Package: 2-layer PE bag

Net Weight Per Drum: 50kgs, 22.5tons/20'FCL without pallets

Port: Qingdao, Shanghai, Ningbo

Applications

   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.   

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