Frequently Asked Questions

Sodium hydrosulfite, also known as sodium dithionite or hydros, has a formula of Na2S2O4. It is a white crystalline powder and exists in both the anhydrous and dehydrated forms. Sodium hydrosulfite has a powerful reducing capacity and allows vat dyes to be reduced readily at room temperatures. It can also be used as antioxidants in hair treatment processes.

Sodium hydrosulfite is used in the bleaching of wood pulp. By reaction with formaldehyde, it produces rongalite that bleaches the wood pulp. This decreases the colour of the pulp so that it becomes whiter. This method is of high efficiency and is also known as reductive bleaching since reduction of the colour-causing compound causes it to lose its colour-causing property.

Yes, we have sell Sodium Hydrosulphite to worldwide.

You can go here for product specification and for material safety data sheet.

Our packing for Sodium Hydrosulphite was available at 20’FCL container. For more information about Sodium Hydrosulphite packing details, you can contact us.

Yes, it is possible to become our partner. Please don’t hesitate to contact us by email: contact@chemtradeasia.com

Please don’t hesitate to contact us, we will give you appropriate and accurate information needed about the product. Please contact us by email: contact@chemtradeasia.com or by Phone No. : +65-62276365 and by Fax No. : +65-62256286.