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211761

Sigma-Aldrich

m-Cresol Purple sodium salt

Dye content 90 %

Synonym(s):
m-Cresolsulfonphthalein sodium salt
Empirical Formula (Hill Notation):
C21H17NaO5S
CAS Number:
Molecular Weight:
404.41
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

form

powder

Quality Level

composition

Dye content, 90%

λmax

579 nm

ε (extinction coefficient)

≥15000 at 433-439 nm in H2O at 0.008 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].Cc1cc(O)ccc1\C(=C2\C=CC(=O)C=C2C)c3ccccc3S([O-])(=O)=O

InChI

1S/C21H18O5S.Na/c1-13-11-15(22)7-9-17(13)21(18-10-8-16(23)12-14(18)2)19-5-3-4-6-20(19)27(24,25)26;/h3-12,22H,1-2H3,(H,24,25,26);/q;+1/p-1/b21-18+;

InChI key

BYQJYOOKENJSNK-GOSREXKOSA-M

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General description

m-cresol purple sodium salt (MCP) is a colorimetric pH indicator dye. The dye is blue in anionic form and yellow in protonated form.

Application

m-Cresol Purple sodium salt has been used to measure pH of seawater using a spectrophotometer.

Packaging

1, 5, 10 g in glass bottle

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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