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Appearance:White to slightly yellowish fine cryst. powder
Throughput:100|Kilogram|Month
pd_productuse:intermediate
Delivery Time:large stock
Purity:99% purity
POTASSIUM METABISULFITE Chemical Properties
Melting point 190°C
density 2.34 g/cm3
vapor density 2.3 (vs air)
storage temp. Store at +5°C to +30°C.
solubility H2O: 0.1 M at 20 °C, clear, colorless
form Powder/Solid
Specific Gravity 2.3
color White to slightly yellow
Odor Odorless
PH 2.5-4.5 (25℃, 0.1M in H2O)
PH Range 3-4.5 at 22.2 g/l at 25 °C
Water Solubility Soluble in water. Insoluble in ethanol.
λmax 267nm(H2O)(lit.)
Sensitive Air Sensitive
Decomposition 150°C
Merck 14,7645
EPA Substance Registry System Disulfurous acid, potassium salt (1:2) (16731-55-8)
Safety Information
Hazard Codes Xi
Risk Statements 31-36/37/38-41
Safety Statements 26-36-39
WGK Germany 1
RTECS TT4920000
F 23
TSCA Yes
HS Code 28322000
Hazardous Substances Data 16731-55-8(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 2300 mg/kg
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