1-(3-Sulfophenyl)-3-methyl-5-pyrazolone
Synonym(s):1-(3-Sulfophenyl)-3-methyl-5-pyrazolone;3-(4,5-Dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonic acid
- CAS NO.：119-17-5
- Empirical Formula: C10H10N2O4S
- Molecular Weight: 254.26
- MDL number: MFCD00043811
- EINECS: 204-303-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-04-23 13:52:06
What is 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone?
Chemical properties
light yellow crystalline powder
The Uses of 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone
1-(3-Sulfophenyl)-3-methyl-5-pyrazolone [1-(3′-sulfophenyl)-3-methyl-5-pyrazolone] may be used to synthesize α-Pigment Yellow 191.
Properties of 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone
| Melting point: | 335 °C (lit.) |
| Density | 1.53±0.1 g/cm3(Predicted) |
| vapor pressure | 0.001Pa at 20℃ |
| storage temp. | 2-8°C |
| form | Powder |
| pka | -0.73±0.30(Predicted) |
| CAS DataBase Reference | 119-17-5(CAS DataBase Reference) |
| EPA Substance Registry System | Benzenesulfonic acid, 3-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)- (119-17-5) |
Safety information for 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H317:Sensitisation, Skin |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. |
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