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SODIUM FORMALDEHYDE SULFOXYLATE HYDRATE Extra Pure

Confirms to IP, USP
Sodium hydroxymethanesulfinate hydrate

COAs

Packings

500 g (00500)

2500 g (02500)

25 Kg (0025K)

50 Kg (0050K)

1PW1200750 1PW1206500 1PDL00040K 1PDLP0065K
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Article No. 05875 Grade Extra Pure
Purity 45% CAS No. 149-44-0
Molecular Formula CH3NaO3S.xH2O Molecular Weight 118.09 (anhydrous basis)
H.S. Code 2831.1020 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour White flakes
Odour Odorless pH value 9.5 - 10.5
Melting point/ Freezing point [°C] 120 °C Flash point [°C] > 100 °C
Solubility in water [% weight] 50 g/l at 20 °C

Specifications

Appearance White big flakes Assay as SO2 (Iodometric; on dried basis) 45 - 55%
Clarity and color of solution Clear and colorless Alkalinity Passes test
pH (2% solution) 9.5 - 10.5 Sodium sulphite (Na2SO3) Max 5%
Iron (Fe) Max 0.001% Sulphide (S) Passes test
Loss on drying (at 105°C) Max 27%

Safety Information and Hazard Symbols

Health Hazard
Symbol: GHS08
 Signal Word: Warning
 Hazardous Statement: H341
 Precaution Statement: P281
Revision Date: 05-Apr-2017

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