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| Product Name: |
SODIUM METABISULFITE
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| Supply Ability: |
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| Related proudcts |
chemicals, sodium metabisulfite, |
| Specifications |
White to slightly yellowish crystalline powder 98.0% min |
| Price Term: |
FOB |
| Port of loading: |
Tianjin |
| Minimum Order |
1FCL |
| Unit Price: |
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PRODUCT IDENTIFICATION
CAS NO.
7681-57-4
EINECS NO.
231-673-0
FORMULA
Na2S2O5
MOL WT.
190.10
H.S. CODE
TOXICITY
SYNONYMS
Dinatriumdisulfit; Disulfito de disodio; Disulfite de disodium; Disodium disulfite; Disodium Salt Pyrosulfurous Acid; Disulfurous acid, disodium salt; Pyrosulfurous acid, disodium salt; Sodium Metabisulfite; Sodium disulfite; Sodium Pyrosulfite
DERIVATION
CLASSIFICATION
PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE
white crystalline powder with odor of sulfur dioxide
MELTING POINT
150 C (Decomposes)
BOILING POINT
SPECIFIC GRAVITY
1.48
SOLUBILITY IN WATER
Freely soluble (470g/l)
pH
3.5 - 5
VAPOR DENSITY
AUTOIGNITION
NFPA RATINGS
Health: 1; Flammability: 0; Reactivity: 0
REFRACTIVE INDEX
FLASH POINT
STABILITY
Stable under ordinary conditions. Hygroscopic.
GENERAL DESCRIPTION & APPLICATIONS
Sodium Metabisulfite is a white to slightly yellowish crystalline powder with sulfur dioxide odor; readily soluble in water. Sodium metabisulfite containing more than 65.0% SO2 w/w releases sulfur dioxide gas when mixed with water. It forms a bisulfite adduct with aldehyde and with ketones to a sulfonic acid. It is used to purify or isolate aldehydes and ketones. Sodium metabisulfite's reductive and sulfonating properties provide versatile applications. It is used as an oxygen scavenger to eliminate the dissolved oxygen in waste water and in pipes. Bisulfite is a reductive bleaching agent. It reduces carbonyl and alcohol groups, which function as colorants of the substances. It is used in bleaching mechanical paper pulp, cotton, wool and kaolin clay. Additional applications include as a preservative (antioxidant), a hair waving agent, and Ensiling agent. Bisulfites are used in industries concerned with leather processing, food and beverage processing, gas purification, water treatment to remove excess chlori |
| Company: |
Tianjin Shuosen Chemicals Co.,Ltd
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| Contact: |
Ms. M Tammy |
| Address: |
Xiqing district |
| Postcode: |
300380 |
| Tel: |
86 311 13832110912 |
| Fax: |
860 311 00000 |
| E-mail: |
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