Indigo Carmine RC09938
2 Inquiries
860-22-0
Food Grade
99%
Royalchem
25kg/drum
Yes
2030-01-01
Pharmaceutical intermediates
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Product Description
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Seller Information
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Inquiry History
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DescriptionECHEMI Editorial Referencepurple powder FD & C Blue No. 2 is principally the disodium salt of 2-( 1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro3-oxo-lH-indole-5-sulfonic acid.
The colorant is a blue-brown to red-brown powder that dissolves in water to give a solution that is blue at neutrality, blue-violet in acid, and green to yellow-green in base. When dissolved in concentrated sulfuric acid, it yields a blue-violet solution that turns blue when diluted with water. It is soluble in 95% ethanol.
FD
Indigo to dark blue powder. (NTP, 1992)
Indigo to dark blue powder. (NTP, 1992)|Indigo carmine is an organic sodium salt resulting from the formal condensation of indigo carmine (acid form) with two equivalents of sodium hydroxide. It is an indicator at pH 11.5-14, changing from blue to yellow. It has a role as a food colouring, a histological dye and a two-colour indicator. It contains an indigo carmine(2-).|Indigotindisulfonate Sodium is the sodium salt form of indigotindisulfonate, a synthetic blue dye and food colorant derived from indigo, that can be used as a stain in medical imaging and as a redox and pH indicator. Upon intravenous administration, indigotindisulfonate is filtered rapidly by the kidneys from the blood and colors the urinary tract which enables the urinary tract to be seen during surgery. It can also be used ex vivo to stain certain specimens, differentiate between benign and malignant lesions, and help stage and diagnose certain types of cancers.|Indolesulfonic acid used as a dye in renal function testing for the detection of nitrates and chlorates, and in the testing of milk.Basic Info-
Product Name:
Indigo carmine
Other Name:1H-Indole-5-sulfonic acid,2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-,sodium salt (1:2);[Δ2,2′-Biindoline]-5,5′-disulfonic acid,3,3′-dioxo-,disodium salt;C.I. Acid Blue 74;1H-Indole-5-sulfonic acid,2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-,disodium salt;1311 Blue;12070 Blue;C.I. 73015;C.I. 75781;Acid Blue W;Acid Leather Blue IC;Airedale Blue IN;Amacid Brilliant Blue;Aniline Carmine Powder;Atul Indigo Carmine;FD & C Blue 2;A.F. Blue No. 2;Bucacid Indigotine B;Canacert Indigo Carmine;Carmine Blue;Cilefa Blue R;C.I. Food Blue 1;C.I. Natural Blue 2;Dolkwal Indigo Carmine;Edicol Supra Blue X;Food Blue 1;Grape Blue A;HD Indigo Carmine;HD Indigo Carmine Supra;Hexacert Blue No. 2;Hexacol Indigo Carmine Supra;Indigo carmine;Indigo Carmine A;Indigo Carmine AC;Indigo Carmine BP;Indigo Carmine Conc. FQ;Indigo Carmine Powder;Indigo Extract;Indigo Carmine X;Indigotine B;Indigotine I;Indigotine N;Indigotine Blue LZ;Indigotine disodium salt;Indigotine Extra Pure A;Indigotine Lake;Indocarmine F;Intense Blue;Maple Indigo Carmine;Mitsui Indigo Carmine;San-ei Indigo Carmine;Sodium 5,5′-indigotindisulfonate;Soluble indigo;Sumitomo Wool Blue SBC;Usacert Blue No. 2;FD and C Blue No. 2;Indigotine IA;Sodium 5,5′-indigodisulfonate;Disodium 5,5′-indigodisulfonate;L Blue Z 5010;Disodium 5,5′-indigotin disulfonate;Soluble indigo blue;Acid Blue 74;Food Blue No. 1;FD&C Blue No. 2;Indigotine Carmine;Indigotine;E 132;Indigotin (solubilized);Indigotin;5,5′-Indigodisulfonic acid disodium salt;Japan Blue 2;FD and C Blue 2;Usacert FD and C Blue No. 2;Ariavit Indigo Carmine;Food Blue No. 2;Food Blue 2;Indigo carmine NB;WAS 35;Sepisperse Dry 1003;Indigo Carmine 37006;Indigo Carmine 307019;Water Blue 177558;Water Blue 177557;FD & C Blue No 2-307045;Usacert FD & C Blue No 2-310118;Necol Indigo Carmine;Indigo Carmine 36009;Neelicol Indigo Carmine;Eurocert Indigo Carmine 311811;FD&C Blue No. 2-37006;Basovit Blue 665E;Cogilor Blue 511.11;Blue 2;
CAS No.:860-22-0
Molecular Formula:C16H10N2O8S2.2Na
InChIKeys:InChIKey=BBHXOPLQIHJZNV-UHFFFAOYSA-N
Molecular Weight:466.35
Exact Mass:465.951752
BRN:4103904
EC Number:212-728-8
UNII:D3741U8K7L
DSSTox ID:DTXSID1020190|DTXSID6044224|DTXSID0044288
NCI Thesaurus Code:C83799
Color/Form:Purple powder|Dark blue powder with coppery luster|Blue-red to red-brown powder or dark blue solid
ATC Code:V - Various
HScode:2933990090
Categories:
Characteristics-
PSA:
189.36000
XLogP3:3.06060
Appearance:Very dark blue to purple Powder/Solid
Density:1.01 g/mL at20 °C
Melting Point:>300°C
Refractive Index:n20/D1.335
Water Solubility:H2O: 1 g/100 mL (25 ºC)
Storage Conditions:Store below +30°C.
Toxicity:LD50 orally in Rabbit: > 2000 mg/kg
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|When heated to decomposition ... emits very toxic fumes of SOx, NOx, and Na2O
Air and Water Reactions:Water soluble.
Reactive Group:Amines, Phosphines, and Pyridines
Reactivity Profile:Sensitive to light. Very sensitive to oxidizing agents. Color is readily discharged by nitric acid, chlorates, etc. Color of aqueous solutions fades on standing. (NTP, 1992)
Hazard IdentificationClassification of the substance or mixture
Skin sensitization, Category 1
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Warning
Hazard statement(s) H317 May cause an allergic skin reaction
Precautionary statement(s) Prevention 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/hearing protection/...
Response P302+P352 IF ON SKIN: Wash with plenty of water/...
P333+P317 If skin irritation or rash occurs: Get medical help.
P321 Specific treatment (see ... on this label).
P362+P364 Take off contaminated clothing and wash it before reuse.
Storage none
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.
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Seller Information
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Business Type:
Trader
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Main Products:
Pharmaceutical intermediates
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Location:
Room 336, Building 7, No. 177 Xingqiao North Road, Xingqiao Street, Linping District, Hangzhou
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Payment Terms:
TT against copy of documents,D/P,L/C,TT against B/L draft before shipment,100% TT in advance
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Average lead Time:
14 days
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Total Annual Revenue:
Less than $1 million
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Total Employees:
Less than 5
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Year of Establishment:
2025
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Inquiry History2 Inquiries
Country Product Purchase Quantity Date Posted 
Belgium
Acid Blue 74
100 G Dec 6, 2023 
France
Indigo Carmine
100 KG Feb 18, 2026 Post an enquiry for this product
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