860-22-0
Product Name:
Indigo Carmine
Formula:
C16H11N2NaO8S2
Synonyms:
Acid Blue 74;Carmine Blue;Indigo Carmine;Indigo-5,5′-disulfonic acid disodium salt;Indigocarmine
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Indigo to dark blue powder. (NTP, 1992) |
|---|---|
| Color/Form | Purple powder |
| Solubility | 10 to 50 mg/mL at 70.7 °F (NTP, 1992) |
| Density | Dark blue, crystalline powder; bronze luster. Density 1.35; sublimes at 300 °C (decomposes). Soluble in aniline, nitrobenzene, chloroform, glacial acetic acid, and concentrated sulfuric acid; insoluble in water, ether, and alcohol /Indigotin/ |
| Decomposition | When heated to decomposition it emits very toxic fumes of /sulfur oxide, nitrogen oxide, and sodium oxide/. |
| Other Experimental Properties | Solutions have a blue or bluish-purple color ... The color is easily discharged by nitric acid, chlorates, etc; color of the aqueous solution fades on standing. Very sensitive to oxidizing agents |
| Chemical Classes | Dyes -> Other Dyes |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H317:Sensitisation, Skin |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P272:Contaminated work clothing should not be allowed out of the workplace. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P333+P313:IF SKIN irritation or rash occurs: Get medical advice/attention. |
COMPUTED DESCRIPTORS
| Molecular Weight | 466.4 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 9 |
| Rotatable Bond Count | 1 |
| Exact Mass | 465.95174613 g/mol |
| Monoisotopic Mass | 465.95174613 g/mol |
| Topological Polar Surface Area | 197 Ų |
| Heavy Atom Count | 30 |
| Formal Charge | 0 |
| Complexity | 877 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 3 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Indigo to dark blue powder. (NTP, 1992)