Molekula
Tetrabromophenol blue
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
Tetrabromophenol blue is a brominated phenolic dye used primarily as a pH indicator in biochemical assays, particularly in protein detection on urinalysis test strips, based on the protein error of indicators, and in titration applications. It changes color from yellow to blue around pH 3.0–4.6, making it useful for detecting shifts in acidity. This chemical has a CAS number of 4430-25-5, a molecular formula of C19H6Br8O5S, and a molecular weight of 985.54 g/mol. It is stored at ambient conditions with a signal word of Warning for safety. Molekula supplies Tetrabromophenol blue 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 — £38.90 per pack ex VAT · £46.68 inc. VAT
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5 g — £118.10 per pack ex VAT · £141.72 inc. VAT
Need a different quantity or pack?
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 | Beige powder |
| Melting Point | 204°C |
| UV 611 nm | ≥55000 |
| Solubility in methanol | Clear solution |
| Assay HPLC | ≥85% |
| Bromide (Br-) | ≥95% of theoretical amount |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 11158590 |
| CAS Number | 4430-25-5 |
| IUPAC Name | 2,6-dibromo-4-[4,5,6,7-tetrabromo-3-(3,5-dibromo-4-hydroxyphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]phenol |
| Molecular Formula | C19H6Br8O5S |
| Molecular Weight | 985.54 |
| Exact Mass | 985.3321 |
| SMILES | C1=C(C=C(C(=C1Br)O)Br)C2(C3=C(C(=C(C(=C3Br)Br)Br)Br)S(=O)(=O)O2)C4=CC(=C(C(=C4)Br)O)Br |
| InChIKey | QPMIVFWZGPTDPN-UHFFFAOYSA-N |
| InChI | InChI=1S/C19H6Br8O5S/c20-7-1-5(2-8(21)16(7)28)19(6-3-9(22)17(29)10(23)4-6)11-12(24)13(25)14(26)15(27)18(11)33(30,31)32-19/h1-4,28-29H |
| PubChem CID | 78159 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29349990 |
| Tariff Code | 2934999090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H319 Causes serious eye irritation
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P337+313 If eye irritation persists get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
- 3,3?,3?,4,5,5?,5?,6-Octabromophenolsulfonphthalein
- C19H6Br8O5S
- PHENOL, 4,4'-(4,5,6,7-T
- QPMIVFWZGPTDPN-UHFFFAOYSA-N
- Tetrabromophenol blue pound TBPB pound(c)
- Tetrabromophenol blue, IND
- Tetrabromophenoltetrabromosulfophthalein
- Tetrabromophenyl blue
- Tetrabromphenol tetrabromsulfonphthalein
- Tetrabromphenolblau
Frequently asked questions
What is Tetrabromophenol blue primarily used for?
Tetrabromophenol blue is commonly used as a pH indicator in analytical chemistry, particularly in the range of pH 3.0–4.6, turning from yellow to blue.
What is the chemical formula and molecular weight of Tetrabromophenol blue?
The chemical formula is C19H6Br8O5S with a molecular weight of 985.54 g/mol.
How should Tetrabromophenol blue be stored?
Store at ambient temperature in a cool, dry place, away from direct sunlight and incompatible substances.
What grade or purity is available for Tetrabromophenol blue?
Molekula supplies analytical grade Tetrabromophenol blue, suitable for laboratory and research applications.
Can Molekula supply Tetrabromophenol blue in bulk quantities?
Yes, we offer bulk quantities of Tetrabromophenol blue upon request, subject to availability and order specifications.
What documentation comes with an order of Tetrabromophenol blue?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation.
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.