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Home › Product Catalog › 1-PHENYL-3-METHYL-5-PYRAZOLONE

1-PHENYL-3-METHYL-5-PYRAZOLONE

CAS 89-25-8C10H10N2OMW 174.20

1-PHENYL-3-METHYL-5-PYRAZOLONE (CAS 89-25-8) — formula C10H10N2O, molecular weight 174.20; category organic chemicals.

Specifications

CAS Number89-25-8
Molecular FormulaC10H10N2O
Molecular Weight174.20
Melting Point261 to 266 °F (NTP, 1992)
Boiling Point549 °F at 105 mmHg (NTP, 1992)
LogP1.12
CategoryOrganic Chemicals

Purchase Profile

What this product is

1-PHENYL-3-METHYL-5-PYRAZOLONE is a carbon-based organic compound with CAS registry number 89-25-8 and molecular formula C10H10N2O (molecular weight 174.20), belonging to the organic chemicals segment of chemical raw materials.

Identification

CAS number: 89-25-8

Its molecular formula C10H10N2O comprises 10 C, 10 H, 2 N, 1 O atoms.

Also known as: 1-PHENYL-3-METHYL-5-PYRAZOLONE · 3-Methyl-1-phenyl-2-pyrazolin-5-one · PMP

Category: organic chemicals

Frequently Asked Questions

What is the CAS number of 1-PHENYL-3-METHYL-5-PYRAZOLONE?

The CAS registry number of 1-PHENYL-3-METHYL-5-PYRAZOLONE is 89-25-8.

What is the molecular formula and molecular weight of 1-PHENYL-3-METHYL-5-PYRAZOLONE?

Molecular formula C10H10N2O, molecular weight 174.20.

What other names is 1-PHENYL-3-METHYL-5-PYRAZOLONE known by?

It is also registered under: 1-PHENYL-3-METHYL-5-PYRAZOLONE, 3-Methyl-1-phenyl-2-pyrazolin-5-one, PMP.

Which category does 1-PHENYL-3-METHYL-5-PYRAZOLONE belong to?

Category: Organic Chemicals.

PubChem Public Data

Public-database records for 1-PHENYL-3-METHYL-5-PYRAZOLONE (CAS 89-25-8), reproduced here for independent cross-checking.

Safety classification and hazard statements

GHS notification summary7.7% (16 / 209)
Reported hazard statementsH302 (26.8%), H315 (34.4%), H317 (59.8%), H319 (23.4%), H335 (26.8%), H412 (52.2%)

This chemical does not meet GHS hazard criteria for 7.7% (16 of 209) of reports.

H302 (26.8%): Harmful if swallowed [Warning Acute toxicity, oral]

Regulatory listings

Regulatory & Food ContactCIR / INCI: Cosmetic ingredients (Phenyl Methyl Pyrazolone) -> CIR (Cosmetic Ingredient Review)
CIR / INCI: Hair dyeing
GHS notification summary7.7% (16 / 209)

Physical description and handling notes

  • 1-phenyl-3-methyl-5-pyrazolone appears as white to off-white powder or crystals. (NTP, 1992)
  • White solid; [Merck Index] Light yellow odorless powder; [Alfa Aesar MSDS]
  • MONOCLINIC PRISMS FROM WATER
  • WHITE POWDER OR CRYSTALS
  • less than 1 mg/mL at 73 °F (NTP, 1992)
  • SOL IN HOT WATER & HOT ALCOHOL; SLIGHTLY SOL IN BENZENE; INSOL IN PETROLEUM ETHER

Reported physical properties

沸点549 °F at 105 mmHg (NTP, 1992)
沸点287
沸点191 °C @ 17 MM HG; 287 °C @ 105 MM HG
熔点261 to 266 °F (NTP, 1992)
熔点129.7
熔点127 °C
熔点128.9 °C
蒸气压LESS THAN 0.01 MM @ 20 °C
LogP1.12
LogP1.44

How this substance is indexed

CAS Registry Number89-25-8
PubChem CID4021
分子式C10H10N2O
IUPAC 名称5-methyl-2-phenyl-4H-pyrazol-3-one
UNII（FDA）S798V6YJRP

Documented uses

  • CIR ingredient: Phenyl Methyl Pyrazolone
  • Used as an intermediate for dyes and drugs, reagent to detect cyanide, and developer for diazotized direct dyes; [HSDB] Used in the treatment of strokes; [Merck Index] Used for synthesis in the chemical industry and in the textile processing industry; [IUCLID] Used in hair dyes; [ExPub: EC]
  • Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
  • Dressing Hair [Category: Other]
  • INTERMEDIATE FOR DYES & DRUGS; SENSITIVE REAGENT FOR DETECTION OF CYANIDE
  • CHEM INT FOR DYES (EG, FOR PYRAZOLONE PIGMENTS), DRUGS (EG, ANTIPYRINE & AMINOPYRINE), DEVELOPER FOR DIAZOTISED DIRECT DYES, REAGENT FOR DETECTION OF CYANIDE

Names this substance appears under

MCI-186; MCI 186; RefChem:57584; edaravone; 89-25-8; 3-METHYL-1-PHENYL-2-PYRAZOLIN-5-ONE; Radicut; Norphenazone; 1-Phenyl-3-methyl-5-pyrazolone; Developer Z; Methylphenylpyrazolone; Norantipyrine; C.I. Developer 1; Phenylmethylpyrazolone; Phenyl methyl pyrazolone; Radicava

Computed molecular descriptors

分子量174.20
XLogP31.3
氢键供体数0
氢键受体数2
可旋转键数1
精确质量174.079312947
单同位素质量174.079312947
拓扑极性表面积32.7
重原子数13
形式电荷0

Database abstract

1-PHENYL-3-METHYL-5-PYRAZOLONE · CAS 89-25-8 · C10H10N2O. UNII S798V6YJRP. 沸点: 549 °F at 105 mmHg (NTP, 1992); 沸点: 287; 沸点: 191 °C @ 17 MM HG; 287 °C @ 105 MM HG.

Source: PubChem / Wikidata; the batch COA governs where values differ.

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