Sodium Sulphite (Na2SO3)

Sodium Sulphite (Na2SO3)



From: £15.79

Select Quantity:
Select Quantity:

Looking for further options on this product?

  • Custom packaging
  • Personalised labelling
  • Specific pack sizes
  • Bespoke blending
  • Bulk quantities
  • Different grades available

Call 1-800-817-175 for details or Contact Us

  • Product Information
  • Specification
  • Hazard Information
  • Precautionary
  • Shipping Statements
  • MSDS


Looking for Sodium Sulphite?

ReAgent has been a leading UK chemical supplier for over 40 years. With accreditation to a number of ISO Standards, as well as a 100% quality guarantee on every product, we have the knowledge and experience to handle all of your business needs.

You can buy sodium sulphite LRG from our online chemical shop in 500g containers. This product is sold with a 96% minimum purity and impurity levels not exceeding 0.015% thiosulphate, 0.002% iron and 0.002% heavy metals

Order online today where you can get nationwide next-day delivery and discounts on bulk orders. We also have extra, industry-leading services available on all products, including personalised labelling, customisable packaging and the choice of specific pack sizes. Simply contact us for further information.

About Sodium Sulphite

Sodium sulphite, also spelt sodium sulfite, is a salt derived from sulphurous acid. With the chemical formula Na2SO3, it can be found in both a hydrate and anhydrous form. Sodium sulphite appears as white odourless crystals that have a saline taste and can dissolve slowly in water.

Sodium sulphite can be used in many applications, from a colour preservative in fruits and meats to a protectant of developer solutions in photography and water treatment in swimming pools.

At room temperature, it is fairly stable but can decompose at temperatures above 600°C. When it does this, it releases toxic fumes like sodium and sulphur oxide. The anhydrous form is very stable against oxidation by air.

Safety Precautions

When handling this product, it is important to read the full MSDS (Material Safety Data Sheet), which is available to download from our website. We also recommend that you wear the appropriate protective clothing and bear the following points in mind:

  • Fire hazard: sodium sulphite is not combustible but it does release toxic and irritating gases in a fire
  • Chemical hazard: It releases toxic fumes on decomposing
  • Health hazard: this compound can cause coughing and a sore throat if inhaled, and it can be harmful if swallowed in large quantities. As sulphites are rapidly oxidised to sulphates – which are less harmful – this compound can be tolerated in small amounts, but high doses can cause violent colic and diarrhoea due to the accumulation of sulphurous acid. It can be fatal if not treated promptly. Also, repeated or prolonged contact with skin may cause irritation

Sodium sulfite should always be stored in a well-ventilated area away from strong oxidants and acids.

100% Quality Guarantee

At ReAgent, we strive to offer all our customers a friendly service. Our products are backed by a 100% quality guarantee so that you can relax and buy with confidence.

Place your order online today, or contact our technical sales team for more information. We’ll be happy to help you before, during and even after your purchase.


BulkCode Pictogram pictogramimage id Active


MSDS Files

The following files are available to download:

Product ID Product post_status Bulk Download SDS File

Please note: we only deliver to registered businesses at non-residential addresses with a minimum order value of €100.

Please notify us if you have specific delivery requirements such as restricted access, requirement for a tail-lift delivery vehicle or pallet truck. Failure to notify us of a special delivery instructions can incur additional charges from our carriers.