Molekula
ABTS (2,2'-Azino-bis(3-ethylbenzthiazoline-6-sulfonic acid)diammonium salt)
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
ABTS (2,2'-Azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) diammonium salt) is a stable, water-soluble chromogen widely used as a substrate in colorimetric assays, particularly for measuring antioxidant activity, peroxidase activity (for example in ELISA), and laccase and other oxidase activity. It generates a soluble green radical cation upon oxidation, enabling precise absorbance readings at 414 nm or 734 nm. This chemical has a CAS number of 30931-67-0, with the molecular formula C18H24N6O6S4 and a molecular weight of 548.68 g/mol. Store it between 2–8 °C, and handle with caution—it carries a warning signal for potential hazards. Molekula supplies ABTS 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.
Often bought together
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 — £61.00 per pack ex VAT · £73.20 inc. VAT
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5 g — £139.80 per pack ex VAT · £167.76 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 | Fine light green powder |
| Purity (HPLC) | >98% |
| Loss on Drying | <5% |
| Solubility | 5%, water |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
For research use only. Not for human use.
Identification
| Property | Value |
|---|---|
| SKU | 51808824 |
| CAS Number | 30931-67-0 |
| IUPAC Name | azane;(2Z)-3-ethyl-2-[(Z)-(3-ethyl-6-sulfo-1,3-benzothiazol-2-ylidene)hydrazinylidene]-1,3-benzothiazole-6-sulfonic acid |
| Molecular Formula | C18H24N6O6S4 |
| Molecular Weight | 548.68 |
| Exact Mass | 548.064 |
| SMILES | CCN1/C(=N/N=C/2\SC3=C(N2CC)C=CC(=C3)S(=O)(=O)O)/SC4=C1C=CC(=C4)S(=O)(=O)O.N.N |
| InChIKey | OHDRQQURAXLVGJ-AXMZSLBLSA-N |
| InChI | InChI=1S/C18H18N4O6S4.2H3N/c1-3-21-13-7-5-11(31(23,24)25)9-15(13)29-17(21)19-20-18-22(4-2)14-8-6-12(32(26,27)28)10-16(14)30-18;;/h5-10H,3-4H2,1-2H3,(H,23,24,25)(H,26,27,28);2*1H3/b19-17-,20-18-;; |
| PubChem CID | 16240279 |
| REACH Code | Y113 |
| HTS Code | 2934.20.8000 |
| Tariff Code | 2934208090 |
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+P340 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+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
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
- 2,2'-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt
- 2,2'-Azino-di-(3-ethylbenzthiazoline sulphonic acid), diammonium salt
- ABTS Diammonium
- ABTS diammonium salt
- AzBTS-(NH4)2
- Diammonium-2,2' Azino-bis(3-ethylbenzothiazoline-6-sulfonate)
Frequently asked questions
What is ABTS used for?
ABTS is primarily used as a substrate for the generation of radical cations in antioxidant assays, such as the ABTS radical cation decolorization assay (ABTS•+), which measures antioxidant capacity.
What is the chemical formula and molecular weight of ABTS?
The chemical formula of ABTS is C₁₈H₂₄N₆O₆S₄, and its molecular weight is 548.68 g/mol.
How should ABTS be stored?
ABTS should be stored at 2 to 8 °C in a cool, dry place, protected from light and moisture.
What grades of ABTS does Molekula supply?
Molekula supplies ABTS in analytical and biochemical research grades, meeting high purity standards for laboratory applications.
Can Molekula supply ABTS in bulk quantities?
Yes, Molekula can supply ABTS in bulk, with quantities tailored to meet your research or industrial needs.
What documentation comes with an order of ABTS?
Each order of ABTS includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.