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
Pricing and availability is not currently available.

form

powder

Quality Level

composition

Dye content, 90%

application(s)

hematology: suitable
histology: suitable

λmax

579 nm

ε (extinction coefficient)

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

Featured Industry

Diagnostic Assay Manufacturing

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

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

NONH for all modes of transport

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Spectrophotometric high-precision seawater pH determination
for use in underway measuring systems
A?mann S
Ocean Science, 7, 597-607 (2011)
M.-I. Baraton
Sensors for Environment, Health and Security (2008)
Peter J Edmunds et al.
The Journal of experimental biology, 223(Pt 8) (2020-03-18)
Experiments with coral fragments (i.e. nubbins) have shown that net calcification is depressed by elevated PCO2 Evaluating the implications of this finding requires scaling of results from nubbins to colonies, yet the experiments to codify this process have not been...

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