Molekula
Potassium indigotrisulfonate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Potassium indigotrisulfonate is a synthetic organic dye used primarily as a redox indicator and biological stain. It features the CAS number 67627-18-3, a molecular formula of C16H7K3N2O11S3, and a molecular weight of 616.72. This product is stored at ambient temperatures and carries the signal word Warning, with hazard statements H315, H319 and H335. Molekula supplies Potassium indigotrisulfonate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 g — £80.90 per pack ex VAT · £97.08 inc. VAT
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5 g — £320.80 per pack ex VAT · £384.96 inc. VAT
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100 g — £15,500.00 per pack ex VAT · £18,600.00 inc. VAT
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Dark blue to crystalline black powder |
| Purity (HPLC) | ⩾ 60.0% |
| Identification (IR) | Conforms to Reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 1 °C |
| Transport Class | Not regulated |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90033615 |
| CAS Number | 67627-18-3 |
| IUPAC Name | tripotassium;3-hydroxy-2-(3-oxo-5-sulfonatoindol-2-yl)-1H-indole-5,7-disulfonate |
| EC Number | 212-627-9 |
| Molecular Formula | C16H7K3N2O11S3 |
| Molecular Weight | 616.72 |
| Exact Mass | 615.8123 |
| SMILES | C1=CC2=C(C=C1S(=O)(=O)[O-])C(=O)C(=N2)C3=C(C4=C(N3)C(=CC(=C4)S(=O)(=O)[O-])S(=O)(=O)[O-])O.[K+].[K+].[K+] |
| InChIKey | BANKRXMWIUVRAN-UHFFFAOYSA-K |
| InChI | InChI=1S/C16H10N2O11S3.3K/c19-15-8-3-6(30(21,22)23)1-2-10(8)17-13(15)14-16(20)9-4-7(31(24,25)26)5-11(12(9)18-14)32(27,28)29;;;/h1-5,18,20H,(H,21,22,23)(H,24,25,26)(H,27,28,29);;;/q;3*+1/p-3 |
| PubChem CID | 105482 |
| REACH Code | Y113 |
| HTS Code | 3212.90.0050 |
| Tariff Code | 3212900000 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+P313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, German, Spanish, French, Italian, Portuguese, Arabic, Dutch.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 5,5',7-Indigotrisulfonic acid tripotassium salt
- Indigotrisulfonic Acid Potassium Salt
- Potassium 3,3'-dioxo-[2,2'-biindolinylidene]-5,5',7-trisulfonate
- Potassium indigotrisulfonate, ozone-scavenging reagent
- Tripotassium 3,3'-dioxo-(:2,2'-biindoline)trisulphonate
- tripotassium 3,3'-dioxo-[DELTA2,2'-biindoline]trisulphonate
- Tripotassium indigo-5,5',7'-trisulfonate
- tripotassium;3-hydroxy-2-(3-oxo-5-sulfonatoindol-2-yl)-1H-indole-5,7-disulfonate
Frequently asked questions
What is Potassium indigotrisulfonate used for?
Potassium indigotrisulfonate is primarily used as a biological stain and a redox indicator in various laboratory applications.
What are the chemical formula and molecular weight of Potassium indigotrisulfonate?
The chemical formula is C16H7K3N2O11S3 and the molecular weight is 616.72 g/mol.
How should Potassium indigotrisulfonate be stored?
This product should be stored at ambient temperature.
Can Molekula supply Potassium indigotrisulfonate in bulk?
Yes, Molekula can supply this product in bulk quantities to meet your specific requirements.
What documentation comes with the order?
Every order is supplied with a Certificate of Analysis (CoA) and a Safety Data Sheet (SDS).
What is the CAS number for Potassium indigotrisulfonate?
The CAS number for this compound is 67627-18-3.
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