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sodium-pyrosulfite(60 products available)
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Sodium metabisulfite

  • CAS:7681-57-4
  • MF:H2O5S2.2Na
  • MW:192.12
  • EINECS:231-673-0
Melting point::
>300 °C (lit.)
Density :
1.48
storage temp. :
Store at +5°C to +30°C.
solubility :
540 g/L (20°C)
form :
Powder/Solid
color :
White to slightly yellow
Specific Gravity:
1.48
PH Range:
4.5 at 50 g/l at 20 °C
PH:
3.5-5 (50g/l, H2O, 20℃)
Odor:
Sulphorous
Water Solubility :
540 g/L (20 ºC)
Sensitive :
Air & Moisture Sensitive
Merck :
14,8638
Exposure limits:
ACGIH: TWA 5 mg/m3
NIOSH: TWA 5 mg/m3
Stability::
Stable. Incompatible with strong oxidizing agents, strong acids. Contact with strong acids releases a poisonous gas. May be moisture and air sensitive.
InChIKey:
HRZFUMHJMZEROT-UHFFFAOYSA-L
Symbol(GHS) 

GHS05,GHS07
Signal word 
Danger
Hazard statements 
H302-H318
Precautionary statements 
P264-P270-P280-P301+P312-P305+P351+P338-P501
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Sodium metabisulfite   7681-57-4

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