Molekula
Bromocresol Purple sodium 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
Bromocresol Purple sodium salt is a synthetic pH indicator dye used in biochemical assays, titrations, and buffer preparations to detect pH changes between 5.2 and 6.8. It appears purple in alkaline solutions and yellow in acidic ones, making it ideal for analytical applications. Catalogue details: CAS 62625-30-3, molecular formula C21H15Br2O5S·Na, molecular weight 562.20 g/mol. Store at ambient conditions. Signal word: Warning. Molekula supplies Bromocresol Purple sodium salt 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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25 g — $170.50 per pack
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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.
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Specifications
| Property | Value |
|---|---|
| Appearance | Dark red/ brown powder |
| Loss on drying (110 °C) | (Max.) 5.00% |
| Solubility (0.1% water) | Clear Reddish Yellow Solution |
| pH Transition - Colour Change | pH5.2 (Yellow) - pH6.8 (Purple) |
| Wavelength of Maximum Absorption in 0.1N NaOH (λ max) | 586.0-592.0 nm |
| Specific absorption (E 1%/1cm) at λ max | (Min.) 870 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
Identification
| Property | Value |
|---|---|
| SKU | 15321705 |
| CAS Number | 62625-30-3 |
| IUPAC Name | sodium 2-[(3-bromo-4-hydroxy-5-methylphenyl)-(3-bromo-5-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonate |
| Molecular Formula | C21H15Br2O5S·Na |
| Molecular Weight | 562.20 |
| Exact Mass | 561.8884 |
| SMILES | CC1=CC(=CC(=C1O)Br)C(=C2C=C(C(=O)C(=C2)Br)C)C3=CC=CC=C3S(=O)(=O)[O-].[Na+] |
| InChIKey | KVSJYIXUWNOWBD-UHFFFAOYSA-M |
| InChI | InChI=1S/C21H16Br2O5S.Na/c1-11-7-13(9-16(22)20(11)24)19(14-8-12(2)21(25)17(23)10-14)15-5-3-4-6-18(15)29(26,27)28;/h3-10,24H,1-2H3,(H,26,27,28);/q;+1/p-1 |
| PubChem CID | 3830446 |
| REACH Code | Y110 |
| Tariff Code | 29147900 |
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
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
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
No alternate names recorded for this product.
Frequently asked questions
What is Bromocresol Purple sodium salt commonly used for?
It is primarily used as a pH indicator in biochemical research, clinical diagnostics, and analytical chemistry for detecting pH changes in the range of 5.2–6.8.
What is the chemical formula and molecular weight of Bromocresol Purple sodium salt?
The formula is **C₂₁H₁₅Br₂O₅S·Na**, and its molecular weight is **562.20 g/mol**.
How should Bromocresol Purple sodium salt be stored?
Store at **ambient temperature** in a tightly sealed container, away from moisture and direct sunlight.
What purity grade is available for Bromocresol Purple sodium salt?
Molekula supplies it in **analytical grade** for high-precision applications, ensuring purity suitable for research and testing.
Can Molekula supply Bromocresol Purple sodium salt in bulk quantities?
Yes, we offer bulk packaging options—please contact our sales team for custom quantities and pricing.
What documentation is provided with an order of Bromocresol Purple sodium salt?
Each order 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.