- Your Cart (0)
Your shopping cart is currently empty.
Spectralite (Thiourea Dioxide) is a replacement for Sodium Hydrosulphite / Thiosulphite used in vat dyeing, discharge printing and general colour stripping on cellulose and protein fibres.
It is an active reducing agent which removes the oxygen from indigo when combined with Soda Ash. Spectralite is five times stronger than Sodium Hydrosulphite the alternative reducing agent.
Use 1 part Soda Ash to 4 parts Spectralite to make a discharge paste for removing some synthetic dyes, especially Procion MX, from cellulose fibres.
Spectralite is combined with Selectasine Indigo Discharge Medium at 8% of volume of discharge medium to activate it. Stir until all crystals have dissolved. Once activated, the discharge medium is effective for up to 18 hours.
The chemical has a shelf life of about two years, if stored in an air tight container. If the material shows a yellowish cast, then it may have lost some of its strength and you may need to use more. Please do a test sample first.
Take care with chemicals: can cause irritation to skin, eyes and respiratory system.
Save while you shop. Look out for 'Buy More & Save!' offers - such as 15% off when you order 12 silk scarves - or visit Special Offers.
UK DELIVERY HAS BEEN AFFECTED BY THE PANDEMIC please see our revised Terms & Conditions.
We welcome orders from overseas customers. Please see our Terms & Conditions for further information.
Join our Community! Find product information, project ideas and news in our Blog, view Safety Data Sheets, or link to our social media sites. Take a look...
George Weil Gift Cards make great presents for creative people and can be redeemed against the value of any item found on this web site.
George Weil offers schools, colleges and professional craft tutors special discount terms when they buy art and craft supplies. Find out more...
George Weil & Sons is a limited company registered in England and Wales. Registered number: 00321890.
Registered office: Old Portsmouth Road, Peasmarsh, Guildford, GU3 1LZ