Supply Food Grade Preservative Water Soluble Inorganic Salt Sodium Metabisulfite

• CAS No.: 7757-83-7
• Formula: Na2o3s
• EINECS: 231-821-4
• Certification: CCIC, CIQ, RoHS, ISO
• Purity: 90%~99%
• Type: Sodium Metabisulfite
• Model NO.: HB-Sodium Metabisulfite
• Appearance: Powder
• Grade Standard: Food Grade
• Product Name: Sodium Metabisulfite
• Test: HPLC UV
• Application: Food Grade Preservative/Industrial Drift Agent, Se
• Shelf Life: 2 Years
• Storage: Cool Dry Place
• Transport Package: Carton Box
• Specification: 99%
• Trademark: Haibo
• Origin: China
• HS Code: 2832100000
• Production Capacity: 20000kg/Month

Product Description

Name: Sodium Metabisulfite
CAS RN 7757-83-7
Subformula Na2O3S
Product overview
Sodium Metabisulfite, a common sulfite, colorless, monoclinic crystal or powder. It has irritating effect on eyes, skin and mucous membrane and can pollute water source. It is subjected to high thermal decomposition to produce toxic sulfide fumes. In industry, it is mainly used to make cellulose sulfite ester, sodium thiosulfate, organic chemicals, bleaching fabrics, etc., and also used as reducing agent, preservative, dechlorination agent, etc.
Application scenario
Solubility: easily soluble in water (67.8g /100 ml (seven water, 18 °C), insoluble in ethanol, etc.
1. Used for trace analysis and determination of tellurium and niobium and preparation of developer, and also used as reducing agent;
2. Used for artificial fiber stabilizer, fabric bleaching agent, photographic developer, dye bleaching deoxidizer, fragrance and dye reducing agent, lignin removal agent for papermaking, etc.
3. Used as ordinary analytical reagents and photoresistance materials;
4. Reductive bleaching agent, which has bleaching effect on food and strong inhibition of oxidase in plant food. China stipulates that it can be used for preserves, and the amount of use is 2.0g/kg; It can also be used for glucose, liquid glucose, table sugar, rock sugar, caramel, candy, bamboo shoots, mushrooms and canned mushrooms, grapes, black currant juice concentrate, the amount of 0.60g/kg. Residual amount of bamboo shoots, mushrooms and canned mushrooms, preserves, grapes and black currant concentrate (SO2)≤0.05g/kg; Residual amount of potato starch ≤0.03g/kg; Biscuits, sugar, vermicelli and other varieties of residue less than 0.1g/kg; The residual amount of liquid glucose shall not exceed 0.2g/kg;
5. Printing and dyeing industry as a deoxidizer and bleach agent, used in the cooking of various cotton fabrics, can prevent the local oxidation of cotton fibers and affect the fiber strength, and improve the whiteness of the cooking material. Used as a developer in the photographic industry. In the organic industry, it is used as a reducing agent in the production of phenylenediamine, 2, 5-dichloroprazolone, anthraquinone-1-sulfonic acid, 1-aminoanthraquinone,etc., which can prevent the oxidation of semi-finished products in the reaction process. Lignin removal agent used in paper industry. Used in the textile industry as a stabilizer for artificial fibers. The electronics industry is used to make photoresistors. Water treatment industry for electroplating wastewater, drinking water treatment;
6. Food industry used as bleach, preservative, loosening agent, antioxidant. It is also used in pharmaceutical synthesis and as a reducing agent in the production of dehydrated vegetables;
7. Used for making cellulose sulfite ester, sodium thiosulfate, organic chemicals, bleached fabrics, etc., and also used as reducing agent, preservative, dechlorination agent, etc.

ANALYSIS	SPECIFICATION	RESULTS
Appearance	White powder	Complies
Odor	Characteristic	Complies
Tasted	Characteristic	Complies
Assay	99%	Complies
Sieve Analysis	100% pass 80 mesh	Complies
Loss on Drying	5% Max.	1.02%
Sulphated Ash	5% Max.	1.3%
Extract Solvent	Ethanol & Water	Complies
Heavy Metal	5ppm Max	Complies
As	2ppm Max	Complies
Residual Solvents	0.05% Max.	Negative
Microbiology
Total Plate Count	1000/g Max	Complies
Yeast & Mold	100/g Max	Complies
E.Coli	Negative	Complies
Salmonella	Negative	Complies