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Sodium Sulphite Anhydrous 98% ACS feedback feedback feedback feedback feedback

Price: £14.45
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Pack: 2 x 1Kg

Price: £26.95

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Pack: 6 x 1Kg

Price: £74.95

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Stock Availability
On Shelf - Approx. UK delivery date: Friday the 11th April 2025*
In bulk stock - ships within 4 - 8 Days (Excluding weekends and public holidays)
4 - 6 Weeks Approx.
UK Shipping

We can only ship to Northern Ireland where a Royal Mail postal option has been chosen at checkout.

We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.

AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE

* We will always try to ship as early as possible

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

Cas No: 7757-83-7
Einecs No: 231-821-4
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    Item exactly as described and of high purity. Well packed for delivery as well.
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    Very helpful and courteous emails from seller, as I had misunderstood details of purchase. A refund was very promptly sent. Thank you very much for your understanding.
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    Prompt delivery no problems would recommend
Source Chemicals Ltd