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556890

Sigma-Aldrich

1-(3-Sulfophenyl)-3-methyl-2-pyrazolin-5-one

95%

Synonym(s):

1-(3-Sulfophenyl)-3-methyl-5-pyrazolone, 3-(4,5-Dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonic acid

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About This Item

Empirical Formula (Hill Notation):
C10H10N2O4S
CAS Number:
119-17-5
Molecular Weight:
254.26
EC Number:
204-303-0
MDL number:
MFCD00043811
UNSPSC Code:
12352100
PubChem Substance ID:
24879590

Assay

95%

mp

335 °C (lit.)

SMILES string

CC1=NN(C(=O)C1)c2cccc(c2)S(O)(=O)=O

InChI

1S/C10H10N2O4S/c1-7-5-10(13)12(11-7)8-3-2-4-9(6-8)17(14,15)16/h2-4,6H,5H2,1H3,(H,14,15,16)

InChI key

VEMGKBUHUTYHHA-UHFFFAOYSA-N

Application

1-(3-Sulfophenyl)-3-methyl-5-pyrazolone [1-(3′-sulfophenyl)-3-methyl-5-pyrazolone] may be used to synthesize α-Pigment Yellow 191.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H317

Hazard Classifications

Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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The first crystal structures of industrial laked yellow pigments determined by X-ray powder diffraction.
Martin U Schmidt et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 15(2), 338-341 (2008-12-02)

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