You can email us at, or call us on 01202 539791.Email: Phone: 01202 539791.


Indigo Carmine (C.I. 73015)

Indigo carmine, or 5,5′-indigodisulfonic acid sodium salt, is an organic salt derived from indigo by sulfonation, which renders the compound soluble in water. It is approved for use as a food colourant in the U.S and E.U., It has the E number E132. It is also a pH indicator.

Product Details

Category Dyes, Stains & Indicators
Price POA
CAS Number 860-22-0
Formula C16H8N2O8S2Na2
Molecular Weight 466.35
Appearance dark blue to purple powder
Availability In Stock
Storage Conditions Room temperature

Product Enquiry

Send us your enquiry for Indigo Carmine (C.I. 73015). We offer custom pack sizes at special prices. We aim to respond to your enquiry within 24 hours.

We value your input so if you have suggestions regarding new applications for Indigo Carmine (C.I. 73015) email us and we will include your contribution on the website.

Enquire about product

Back to Top