Bromothymol Blue CAS 76-59-5

Product name:Bromothymol Blue
CAS：76-59-5
MF：C27H28Br2O5S
MW：624.38
EINECS:200-971-2

Product Description

Product name:Bromothymol Blue

CAS：76-59-5

MF：C27H28Br2O5S

MW：624.38

EINECS:200-971-2

Applicatiuon：

Used as acid-base indicators and chromatographic analysis reagents in analytical chemistry; also used as dyes and metabolites

Specifications :

Bromothymol Blue Basic information
Product Name:	Bromothymol Blue
CAS:	76-59-5
MF:	C27H28Br2O5S
MW:	624.38
EINECS:	200-971-2
Mol File:	76-59-5.mol
Bromothymol Blue Chemical Properties
Melting point	200-202 °C (lit.)
density	1.4668 (estimate)
Fp	38 °C
storage temp.	Store at +5°C to +30°C.
solubility	Solubility Sparingly soluble in water, benzene; soluble in ethanol, ether; insoluble in petroleum ether
form	Solid
pka	7.0, 7.1(at 25℃)
Boiling point	614.3±55.0 °C(Predicted)
color	Pink-brown to purple
PH Range	6(yellow)-7.6(blue)
PH	pH : 6.0～7.6
Odor	Characteristic odour
Water Solubility	slightly soluble
λmax	420nm, 435nm, 620nm
Merck	141,445
BRN	373934
Stability:	Stable. Incompatible with strong oxidizing agents.
Major Application	Sol-gel matrix, fuel cells, optical sensors, combustion gas detection system, paints, toys, cleaning products, detergents, textiles, food freshness sensor, identifying fresh and stale rice,wheat, detecting microorganisms, bacterial growth, psychoactive drug, dental materials
CAS DataBase Reference	76-59-5(CAS DataBase Reference)
EPA Substance Registry System	Bromothymol blue (76-59-5)

product name	Bromothymol Blue		CAS		76-59-5
test date	2022.8.27		Production Date		2022.9.5
Name (content and impurity content %)		index		result
PH color change domain		6.0 (yellow)-7.6 (blue)		6.0 (yellow)-7.6 (blue)
Mass Absorption Index (L/cm g) ≥		52.0		52.5
Ethanol dissolution test		qualified		qualified
Ignition residue (as sulfate) ≤		0.3		0.045

公司信息

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.