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1.03025

Bromocresol purple

Name: Bromocresol purple
Brand: MM

pH indicator, ACS, Reag. Ph Eur

Synonym(s):

Bromocresol purple, 5′,5′′-Dibromo-o-cresolsulfonphthalein

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About This Item

Empirical Formula (Hill Notation):

C₂₁H₁₆Br₂O₅S

CAS Number:

115-40-2

Molecular Weight:

540.22

UNSPSC Code:

12171502

EC Index Number:

204-087-8

NACRES:

NA.21

MDL number:

MFCD00011681

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Properties

Product Name

Bromocresol purple, indicator ACS,Reag. Ph Eur

grade

ACS reagent

Quality Level

200

agency

reag. Ph. Eur.

form

solid

loss

≤1% loss on drying, 110°C

visual transition interval

5.2-6.8, greenish yellow to blue-violet

mp

242 °C

bulk density

515 kg/m³

storage temp.

2-30°C

SMILES string

[S]1(=O)(=O)OC(c4c1cccc4)(c3cc(c(c(c3)C)O)Br)c2cc(c(c(c2)C)O)Br

InChI

1S/C21H16Br2O5S/c1-11-7-13(9-16(22)19(11)24)21(14-8-12(2)20(25)17(23)10-14)15-5-3-4-6-18(15)29(26,27)28-21/h3-10,24-25H,1-2H3

InChI key

ABIUHPWEYMSGSR-UHFFFAOYSA-N

Description

Analysis Note

Transition range: pH 5.2 - pH 6.8greenish yellow - blue violet
Appearance of solution: passes test
Loss on drying (110 °C): ≤ 1
Transition range (according to ACS): passes test
Sensitivity test: passes test

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Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c