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Basic Information
CAS No.: 20139-55-3
Name: 4'-Chloro-2'-methylacetoacetanilide
Molecular Structure:
Molecular Structure of 20139-55-3 (4'-Chloro-2'-methylacetoacetanilide)
Formula: C11H12 Cl N O2
Molecular Weight: 225.675
Synonyms: o-Acetoacetotoluidide,4'-chloro- (8CI); NSC 87579
EINECS: 243-540-4
Density: 1.247 g/cm3
Melting Point: 103 °C
Boiling Point: 390.4 °C at 760 mmHg
Flash Point: 189.9 °C
Appearance: White Crystals
Safety: Moderately toxic by ingestion. When heated to decomposition it emits toxic vapors of NOx.
PSA: 46.17000
LogP: 2.63900
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Chemistry

Product Name: Acetoacet-4-chloro-2-methylanilide (CAS NO.20139-55-3)


Molecular Formula: C11H12ClNO2
Molecular Weight: 225.67g/mol
Mol File: 20139-55-3.mol
Einecs: 243-540-4
Appearance: White Crystals
Melting Point: 103 °C
Boiling point: 390.4 °C at 760 mmHg
Flash Point: 189.9 °C
Density: 1.247 g/cm3
Surface Tension: 45.2 dyne/cm
Enthalpy of Vaporization: 63.99 kJ/mol
Vapour Pressure: 2.66E-06 mmHg at 25°C
XLogP3: 2.4
H-Bond Donor: 1
H-Bond Acceptor: 2

Uses

 Acetoacet-4-chloro-2-methylanilide (CAS NO.20139-55-3) is mainly used for synthesis of dyes and pigments.

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 oral 3500mg/kg (3500mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: CHANGES IN MOTOR ACTIVITY (SPECIFIC ASSAY)		 Personal Communication from LONZA Ltd., CH-4002, Basel, SwitzerlandVol. 22SEP1981,

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Moderately toxic by ingestion. When heated to decomposition it emits toxic vapors of NOx.

Specification

 Acetoacet-4-chloro-2-methylanilide ,its CAS NO. is 20139-55-3,the synonyms is Acetoacet-4-chloro-2-methylanilide ; 4-Chloro-o-acetoacetotoluidide ; 4-Chloro-2-acetoacetoluidide ; Acetoacet-p-chloro-o-toluidide ; 4''-Chloro-2''-methylacetoacetanilide,98.0%+(lc)(t) ; 4'-Chloro-2'-methylacetoacetanilide ; n-(4-Chloro-2-methyl-phenyl)-3-oxo-butanamide ; n-Acetoaceto-p-chloro-o-toluidide .