ChemicalBook > CAS DataBase List > Bromocresol Purple

Bromocresol Purple

Product Name
Bromocresol Purple
CAS No.
115-40-2
Chemical Name
Bromocresol Purple
Synonyms
BCP;bromocresol;BROMCRESOL PURPLE;BROMOCRESOL PURPLE SOLUTION;4,4’-(3h-2,1-benzoxathiol-3-ylidene)bis(2-bromo-6-methylphenol)s,s-dioxide;Nsc 374134;M.W. 540.24;Bromocresolred;BromocresolPurpbe;Bromocresol purpl
CBNumber
CB1347717
Molecular Formula
C21H16Br2O5S
Formula Weight
540.22
MOL File
115-40-2.mol
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Bromocresol Purple Property

Melting point:
240 °C (dec.) (lit.)
Density 
1.6509 (estimate)
Flash point:
36 °C
storage temp. 
Store at +5°C to +30°C.
solubility 
ethanol: soluble1mg/mL
form 
Solid
pka
6.21, 6.3, 6.4(at 25℃)
Boiling point:
590.2±50.0 °C(Predicted)
color 
Purplish-brown
PH Range
5.2(yellow)-6.8(purple)
PH
pH : 5.2～6.8
Water Solubility 
practically insoluble
λmax
419nm, 433nm, 591nm
Merck 
14,1387
BRN 
359618
Stability:
Stable. Incompatible with strong oxidizing agents.
Major Application
Waveguides, fuel cells, sensors, sol-gel technology, display device, falsification-proof security paper, paints, detergents, identifying fresh and stale rice, detecting lactic acid bacteria, dental materials, vaginal infection test method
InChIKey
ABIUHPWEYMSGSR-UHFFFAOYSA-N
CAS DataBase Reference
115-40-2(CAS DataBase Reference)
EPA Substance Registry System
Bromcresol Purple (115-40-2)
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Safety

Hazard Codes 
Xi,Xn
Risk Statements 
36/37/38-10-20/21/22
Safety Statements 
26-36-37/39-16
RIDADR 
UN 1993 3/PG 3
WGK Germany 
3
TSCA 
Yes
HS Code 
29349990
Hazardous Substances Data
115-40-2(Hazardous Substances Data)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
114375
Product name
Bromocresol Purple
Purity
BioReagent, suitable for indicator, Dye content 90%
Packaging
5g
Price
$71.4
Updated
2024/03/01
Sigma-Aldrich
Product number
114375
Product name
Bromocresol Purple
Purity
BioReagent, suitable for indicator, Dye content 90%
Packaging
25g
Price
$212
Updated
2024/03/01
Sigma-Aldrich
Product number
1.03025
Product name
Bromocresol purple
Purity
indicator ACS,Reag. Ph Eur
Packaging
5G
Price
$141
Updated
2024/03/01
Sigma-Aldrich
Product number
1.03025
Product name
Bromocresol purple
Purity
indicator ACS,Reag. Ph Eur
Packaging
25g
Price
$351
Updated
2024/03/01
TCI Chemical
Product number
B0580
Product name
Bromocresol Purple
Purity
>97.0%(HPLC)
Packaging
25g
Price
$162
Updated
2024/03/01
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Bromocresol Purple Chemical Properties,Usage,Production

Chemical Properties

Crystalline

Uses

As indicator, pH 5.2 yellow; pH 6.8 purple.

Uses

It is used as a pH indicator and to measure serum albumin concentrations. It is used as a pH indicator (5.2-6.8 : yellow to blue-purple) and also used in spectrophotometric determination of serum-albumin.

Uses

Bromocresol purple has been used as a pH indicator in the yeast culture media. It has been used as a pH indicator in the culture media of Geobacillus stearothermophilus subsp. Calidolactis.

Definition

ChEBI: A member of the class of 2,1-benzoxathioles that is 2,1-benzoxathiole 1,1-dioxide in which both of the hydrogens at position 3 have been substituted by 3-bromo-4-hydroxy-5-methylphenyl groups. A hydrophilic dye that is used as a pH indicator and to measure serum albumin concentrations.

General Description

Bromocresol purple is a pH indicator, which changes color from yellow (at low pH 5.2) to violet (above pH 6.8). It aids in determining the dead cell count for cells with plasma membrane damage. Bromocresol purple is widely used as a fluorescent stain in yeast cells. Cells with an intact plasma membrane are not stained, while damaged cells are seen as blue-grey ghosts.

Biochem/physiol Actions

Bromocresol purple is a pH indicator which changes color from yellow (at low pH 5.2) to violet (above pH 6.8). It is mainly used as a fluorescent stain in yeast cells. It helps in dead cell count for cells with plasma membrane damage. Cells with proper cell membrane are not stained, while damaged cells are seen as blue-grey ghosts.

Purification Methods

Dissolve the dye in aqueous 5% NaHCO3 solution and precipitate it from a hot solution by dropwise addition of aqueous HCl. Repeat this until the UV/VIS-extinction did not increase at 419nm. It can also be recrystallised from *benzene. It is an indicator: at pH 5.2 (yellow) and pH 6.8 (purple). [Beilstein 19/3 V 460.]

Bromocresol Purple Preparation Products And Raw materials

Raw materials

ethionic anhydride o-Cresol o-Toluidine

Preparation Products

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View Lastest Price from Bromocresol Purple manufacturers

Hebei Zhuanglai Chemical Trading Co Ltd
Product
Bromocresol Purple 115-40-2
Price
US $79.00-38.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20ton
Release date
2024-11-22
HebeiShuoshengImportandExportco.,Ltd
Product
Bromocresol Purple 115-40-2
Price
US $6.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
2000KG/Month
Release date
2024-08-09
Hebei Longbang Technology Co., Ltd
Product
Bromocresol Purple 115-40-2
Price
US $6.00/kg
Min. Order
1kg
Purity
More than 99%
Supply Ability
2000KG/Month
Release date
2024-05-13

115-40-2, Bromocresol PurpleRelated Search:

Cresol Purple meso-2,3-Dibromosuccinic acid Bromocresol green CRESYL VIOLET ACETATE Chlorosulfonyl isocyanate m-Cresol o-Cresol 1,3-Dibromo-5,5-dimethylhydantoin O-Phthalimide Phenylmethylsulfonyl fluoride 2,2-Bis(bromomethyl)propane-1,3-diol Sulfosulfuron 2,3-Dibromopropionic acid 1,2-Dibromopropane Bromocresol Green Bromocresol purple indicator solution NA Cresol Bromocresol Purple Solution

  • 4,4’-(3h-2,1-benzoxathiol-3-ylidene)bis(2-bromo-6-methylphenol)s,s-dioxide
  • 4,4’-(3h-2,1-benzoxathiol-3-ylidene)bis(2-bromo-6-o-cresol)s,s-dioxide
  • 4,4’-(3H-2,1-Benzoxathiol-3-ylidene)bis[2-bromo-b-methylphend]S,S-dioxide
  • Bromocresol purple indicator solution (for microbial limit check)
  • 3',3''-DIBROMO-O-CRESOLSULFONPHTHALEIN
  • Bromocresol Purple, indicator grade, pure
  • Phenol, 4,4-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis2-bromo-6-methyl-
  • BCP
  • Bromocresol Purple (0.04% in Water) [for pH Determination]
  • Bromocresol Purple (0.05% in ca. 20% Ethanol) [for Titration]
  • 5,5μ-Dibromo-o-cresolsulfonphthalein, Bromcresol purple sultone form
  • A,A-BIS(5-BROMO-4-HYDROXY-M-TOLYL)-A-HYDROXY-O-TOLUENESULFONIC ACID G-SULTONE
  • 5',5''-DIBROMO-2-CRESOLSULFONEPHTHALEIN
  • 5',5''-DIBROMO-O-CRESOLSULFONEPHTHALEIN
  • 5',5'-DIBROMO-O-CRESOLSULFONEPHTHALEIN
  • 5',5''-DIBROMO-O-CRESOLSULFONPHTHALEIN
  • 5,5'-DIBROMO-O-CRESOLSULFONPHTHALEIN
  • BROMOCRESOL PURPLE INDICATOR GRADE
  • BROMOCRESOL PURPLE, FOR MICROSCOPY
  • BROMOCRESOL PURPLE SOLUTION, ACID-BASEIN DICATOR
  • BROMOCRESOL PURPLE INDICATOR, REAG. PH. EUR.
  • BROMO CRESOL PURPLE SOLUTION 100 ML
  • BromocresolPurpleIndicatorSolution
  • BromoethaneForSynthesis
  • BromocresolPurple,FreeAcid
  • M.W. 540.24
  • BROMOCRESOL PURPLE SOLUTION
  • BROMOCRESOL PURPLE, REAG.
  • BromocresolPurpbe
  • BROMCRESOL PURPLE SULTONE FORM
  • BROMCRESOL PURPLE
  • BROMOCRESOL PURPLE
  • BROMOCRESOL PURPLE ETHANOL(20)
  • BROMOCRESOL PURPLE TS
  • DIBROMO-O-CRESOLSULFONPHTHALEIN
  • bromocresol
  • Bromocresolred
  • dibromo-o-cresolphthaleinsulfone
  • pourpredebromocresol
  • 3H-2,1-Benzoxathiole, phenol deriv.
  • Bromocresol Purple Solution [for spray]
  • 3,3-Bis(3-bromo-4-hydroxy-5-methylphenyl)-3H-2,1-benzoxathiol 1,1-dioxide
  • 3,3-Bis(3-bromo-4-hydroxy-5-methylphenyl)-3H-2,1-benzoxathiole 1,1-dioxide
  • 3,3-Bis(4-hydroxy-3-bromo-5-methylphenyl)-3H-2,1-benzoxathiole 1,1-dioxide
  • Bromocresol Purple,pure,indicator grade
  • Bromocresol Purple,Free Acide
  • BroMocresol Purple, indicator grade, pure 140GR
  • BroMocresol Purple, indicator grade, pure 25GR
  • BroMocresol Purple, indicator grade, pure 5GR
  • BroMocresol Purple (BCP)
  • BROMOCRESOL PURPLE INDICATOR 5 G
  • BROMOCRESOL PURPLE INDICATOR 25 G
  • 3,3-Bis(3-broMo-4-hydroxy-5-Methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide
  • BroMocresol Purple, Sultone, Reagent, ACS
  • BroMocresol Purple, ACS reagent, indicator
  • BroMocresol purole
  • 3,3-Bis(3-bromo-4-hydroxy-5-methylphenyl)
  • Nsc 374134