POTASSIUM METABISULFITE

$28 - $3409

Price

Brand	Packaging	Price	Product name
AK Scientific 5222AF	100g	$74	Potassiummetabisulfite
Sigma-Aldrich 12619	1kg	$79.1	Potassium disulfite
Sigma-Aldrich 1.05057	500g	$80.7	Potassium disulfite
Sigma-Aldrich P2522	500g	$116	Potassium disulfite
Sigma-Aldrich 1.05057	1kg	$127	Potassium disulfite
Sigma-Aldrich 1.05057	2.5kg	$245	Potassium disulfite
Sigma-Aldrich 60508	250g	$49.2	Potassium disulfite
Sigma-Aldrich 55777	1g	$60.5	Potassium disulfite
Sigma-Aldrich 60508	5kg	$433	Potassium disulfite
Sigma-Aldrich 1.05056	5kg	$524	Potassium disulfite

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Melting point	190°C
Density	2.34 g/cm³
bulk density	1000-1300kg/m3
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
PH	2.5-4.5 (25℃, 0.1M in H2O)
Odor	Odorless
PH Range	3-4.5 at 22.2 g/l at 25 °C
Water Solubility	Soluble in water. Insoluble in ethanol.
Sensitive	Air Sensitive
Decomposition	150°C
λmax	267nm(H2O)(lit.)
Merck	14,7645
EPA Substance Registry System	Disulfurous acid, potassium salt (1:2) (16731-55-8)
Absorption	cut-off at 308nm in H2O at 0.1M