A note to our European Union customers
International shipping is currently disabled due to ongoing issues resulting from Brexit
and changes with customs procedures. Please note, once resumed, international shipments will
be subject to VAT and duties and orders can only be placed in acceptance of this.
Northern Ireland
We will only be able to ship to Northern Ireland where a Royal Mail postal option has been chosen.
Other UK orders are unaffected
Price: £4.95
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Sodium sulfite (sodium sulphite) is a soluble sodium salt of sulfurous acid (sulfite) with the chemical formula Na2SO3. It is a product of sulfur dioxide scrubbing, a part of the flue-gas desulfurization process. It is also used as a preservative to prevent dried fruit from discoloring, and for preserving meats, and is used in the same way as sodium thiosulfate to convert elemental halogens to their respective hydrohalic acids, in photography and for reducing chlorine levels in pools.
FOOD GRADE CERTIFIED
Minimum Assay: >98%
Molecular Formula: Na2SO3
Molecular Weight: 126.05 g/mol
Melting Point: 884°C
Alkalinity (Na2CO3); < 0.1%
Thiosulphates (S2O3): < 0.01%
Iron (Fe): < 0.0005%
Heavy metals (Pb): < 0.001%
Selenium (Se): < 0.0005%
Arsenic (As): < 0.0001%
Lead (Pb): < 0.0002%
Mercury (Hg): < 0.0001%
Meets the requirements of EC Directive 96/77 (Food Additives), FCC V (2004), ANSI PH4.275, ISO 418 (Photo Standards). Certified Food Grade.
Hazard Phrases: Not considered harmful under normal laboratory conditions
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