Bromocresol Purple CAS 115-40-2 5′′-Dibromo-O-Cresolsulfonephthalein Bcp

• CAS No.: 115-40-2
• Formula: C21h16br2o5s
• EINECS: 204-087-8
• Aldehyde: Monoaldehyde
• Aether: Cyclic Ether
• Hydroxybenzene: Monohydric Phenol
• Model NO.: SUREST-2
• Ketone: Unsaturated Ketone
• Melting Point: 245 ºC
• Water Solubility: Practically Insoluble
• Shelf Life: 2 Years
• Appearance: Yellow or Pink Powder
• Stock: Available
• Transport Package: 25kg or 200 Kg/Barrel
• Specification: 99%min
• Trademark: Surest
• Origin: China
• HS Code: 2907129000
• Production Capacity: 1 Ton Yearly

Product Description

Bromocresol Purple

Name	Bromocresol Purple
Synonyms	5',5''-Dibromo-o-cresolsulfonephthalein; BCP
Molecular Structure
Molecular Formula	C21H16Br2O5S
Molecular Weight	540.22
CAS Registry Number	115-40-2
EINECS	204-087-8

 

Form :powder

pH :   5.2-6.8, yellow to purple

Solubility :   methanol: 4 mg/mL, orange

Application(s) : diagnostic assay manufacturing ,hematology histology ,

Storage temp :  room temp

Tests	Specification
Appearance	Pink or pinkish purple powder
Colour-changing ranges	5.2(yellow)~6.8(purple)
Maximum absorption λ1(PH 5.2),nm λ2 (PH 6.8), nm	427~431 588~590
Mass absorption coefficient,L/cm.g,dry basis α1(λ1  PH 5.2) α2(λ2  PH 6.8)	40.5~45.0 100.0~110.0
Dilute alkali solution test	Should pass
Residue on ignition(as sulphate)	≤0.1%
Loss on drying	≤0.5%

Main uses:
1. Acid-base indicator, with a color change from light yellow to purplish red, and a pH value in the color change range of 5.2-6.8. Used as a reagent for thin layer chromatography to detect binary hydroxyacids and halogen ions (excluding fluorine).
2. It is also used as an extractant for the photometric determination of quaternary ammonium cations.