Sodium Sulphite Anhydrous
Cosmetic Grade
COA & SOS Available
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How Sodium Sulphite Anhydrous Works
Understanding its oxygen-scavenging and reducing action in suitable cosmetic formulations.
Dissolves in Water
Sodium Sulphite Anhydrous dissolves in the aqueous phase, releasing sulphite ions into the formulation.
Consumes Dissolved Oxygen
Sulphite ions react with dissolved oxygen and are converted into sulphate, helping reduce oxygen available for oxidation reactions.
Provides Reducing Action
It acts as a reducing agent by reacting with certain oxidising substances and helping counter specific oxidation processes.
Helps Protect Sensitive Ingredients
By reducing oxidative exposure, it can help minimise unwanted degradation and discolouration in compatible formulations.
Best Used For
Selected applications requiring reducing and antioxidant properties.
Simple steps for best results
Guidelines for incorporating Sodium Sulphite Anhydrous into suitable formulations.
Check the supplied grade
Review the technical data sheet for purity, recommended concentration, compatibility and handling requirements.
Prepare the aqueous phase
Measure the required quantity of water or another suitable aqueous medium.
Dissolve the ingredient
Add Sodium Sulphite Anhydrous gradually to the aqueous phase with gentle stirring until dissolved.
Incorporate into the formulation
Add the solution at the stage recommended by the supplier, avoiding uncontrolled contact with acidic ingredients.
Frequently asked questions
What is Sodium Sulphite Anhydrous used for?
It is used as a reducing agent and antioxidant in selected formulations to help minimise oxidation and protect oxidation-sensitive ingredients.
What does anhydrous mean in Sodium Sulphite Anhydrous?
Anhydrous means the material does not contain water of crystallisation in its chemical structure.
Is Sodium Sulphite Anhydrous water soluble?
Yes. It is water soluble and can be incorporated into suitable aqueous formulation systems.
Is Sodium Sulphite Anhydrous an antioxidant?
Yes. It acts as a reducing agent and can help limit oxidative reactions in compatible formulations.
Can Sodium Sulphite Anhydrous be used as a preservative?
It is not a broad-spectrum preservative and should not be used as a replacement for a suitable cosmetic preservation system.
Can Sodium Sulphite Anhydrous be used in hair-care products?
It may be used in selected hair-care applications where reducing or antioxidant properties are required, depending on the formulation and grade.
What happens when Sodium Sulphite Anhydrous is mixed with acids?
Acidification can release sulphur dioxide gas. Avoid uncontrolled contact with acids and follow appropriate handling and safety instructions.
Is Sodium Sulphite Anhydrous the same as Sodium Metabisulphite?
No. They are different chemical compounds with different chemical compositions and should not be substituted on a direct weight-for-weight basis without formulation assessment.