Indigo carmine
Also known as: Acid Blue 74, C.I. 73015, Food Blue 1, Food Blue No. 2, FD & C Blue 2, E 132, Indigotine, Indigotindisulfonate Sodium, Disodium 5,5'-indigotin disulfonate, 5,5'-Indigodisulfonic acid disodium salt, Indigo-5,5'-disulfonic acid disodium salt, Sodium 3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulfonate, Emtricitabine Impurity 4, 1311blue, Greell S, murabba, l-blau2, acidbluew, trans-indigo carmine
Indigo carmine (CAS 860-22-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C16H8N2Na2O8S2 and a molecular weight of 466.353 g/mol. Key properties include a melting point of >300°C and a density of 1.01 g/mL at 20 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. It is listed by 1 supplier; request a quote for pricing. Record last updated Nov 3, 2026.
- CAS No.
- 860-22-0
- Jingsj CID
- J-6803-7
- Molecular Formula
- C16H8N2Na2O8S2
- Molecular Weight
- 466.353 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | >300°C |
|---|---|
| Density | 1.01 g/mL at 20 °C |
| Exact Mass | 465.951752 |
| PSA | 189.36000 |
| LogP | 3.06060 |
| Refractive Index | n20/D 1.335 |
| Additional Property | 1 g/100 mL (25 ºC) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Activity & Biological Data
| Additional Information | [1]. K Takeuchi, et al. Quantitative Determination of Aqueous-Phase Ozone by Chemiluminescence Using indigo-5,5'-disulfonate. Anal Chem. 1989 Mar 15;61(6):619-23. |
|---|
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Indigo carmine?
The CAS number of Indigo carmine is 860-22-0.
What are the molecular formula and molecular weight of Indigo carmine?
Indigo carmine has molecular formula C16H8N2Na2O8S2 and molecular weight 466.353 g/mol.
Which suppliers offer Indigo carmine?
1 supplier(s) listed; request a quote for pricing.
Is Indigo carmine hazardous?
Indigo carmine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of Indigo carmine?
For Indigo carmine, Downstream Products: DL-Malic acid, L-(+)-Tartaric acid, 2-Nitrobenzaldehyde.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Indigo carmine (CAS 860-22-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6803-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.