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AR
LABOR
224202129
Sodium Hydrogen Sulfite 58.5% AR Grade Reagent
Cas Number:7631-90-5
Formula: NaHSO3
Molar Mass:104.06
EC Number:231-548-0
Physicochemical properties:
White crystalline powder. There is a smell of sulfur dioxide. Unpleasant taste. Part of the sulphur dioxide is lost in the exposed air and oxidized to sulfate. It is dissolved in 3.5 parts of cold water, 2 parts of boiling water, and about 70 parts of ethanol, and the aqueous solution is acidic.The relative density is 1.48. Low toxicity, half lethal dose (rat, oral) 2000mg/kg. Irritating.
Usage:
Reducing agent. Preservative. Disinfectant. Bleach.
Packing:
500g/25kg
Sodium Hydrogen Sulfite 58.5% AR Grade Reagent
Cas Number:7631-90-5
Formula: NaHSO3
Molar Mass:104.06
EC Number:231-548-0
Physicochemical properties:
White crystalline powder. There is a smell of sulfur dioxide. Unpleasant taste. Part of the sulphur dioxide is lost in the exposed air and oxidized to sulfate. It is dissolved in 3.5 parts of cold water, 2 parts of boiling water, and about 70 parts of ethanol, and the aqueous solution is acidic.The relative density is 1.48. Low toxicity, half lethal dose (rat, oral) 2000mg/kg. Irritating.
Usage:
Reducing agent. Preservative. Disinfectant. Bleach.
Packing:
500g/25kg
Item of Analysis | Standard |
Assay(as SO2),% | 58.5 min |
Transparency of solution | to pass test |
Insoluble in water,% | 0.005 max |
Chloride(Cl),% | 0.01 max |
Iron(Fe),% | 0.001 max |
Arsenic(As),% | 0.0001 max |
Heavy metals(as Pb),% | 0.001 max |
Item of Analysis | Standard |
Assay(as SO2),% | 58.5 min |
Transparency of solution | to pass test |
Insoluble in water,% | 0.005 max |
Chloride(Cl),% | 0.01 max |
Iron(Fe),% | 0.001 max |
Arsenic(As),% | 0.0001 max |
Heavy metals(as Pb),% | 0.001 max |
Symbol | |
Signal word | Warning |
Hazard statement | H302 |
Precautionary statements—Prevention | P264 |
P270 | |
Precautionary statements—Response | P301+P312+P330 |
UN No. | No Information |
Symbol | |
Signal word | Warning |
Hazard statement | H302 |
Precautionary statements—Prevention | P264 |
P270 | |
Precautionary statements—Response | P301+P312+P330 |
UN No. | No Information |