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495-45-4

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Basic Information
CAS No.: 495-45-4
Name: 1,3-DIPHENYL-2-BUTEN-1-ONE
Article Data: 155
Molecular Structure:
Molecular Structure of 495-45-4 (1,3-DIPHENYL-2-BUTEN-1-ONE)
Formula: C16H14 O
Molecular Weight: 236.313
Synonyms: Chalcone, b-methyl- (7CI,8CI); Dypnone(6CI); 1,3-Diphenyl-2-buten-1-one; NSC 2063; b-Methylchalcone; b-Methylstyryl phenyl ketone
EINECS: 207-801-6
Density: 1.06 g/cm3
Melting Point: 68-69 °C(Solv: ethanol (64-17-5); ligroine (8032-32-4))
Boiling Point: 342.5 ºC at 760 mmHg
Flash Point: 150.1 ºC
Safety: Moderately toxic by ingestion. Mildly toxic by skin contact. A skin and eye irritant. Flammable liquid when exposed to heat or flame; can react with oxidizing materials. To fight fire, use alcohol foam; CO2, dry chemical. Used as a sunscreen. When heated to decomposition it emits acrid smoke and irritating fumes. See also KETONES.
PSA: 17.07000
LogP: 3.97280
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Chemistry

The IUPAC name of Dypnone (CAS NO.495-45-4): (Z)-1,3-Diphenylbut-2-en-1-one
Synonyms: Dypnone ; 1,3-Diphenyl-2-buten-1-one ; (2E)-1,3-Diphenyl-2-buten-1-one ; 1,3-Diphenyl-2-buten-1-on ; Beta-methyl-chalcon ; Beta-Methylchalcone ; Beta-methylstyrylphenylketone
CAS: 495-45-4 
EINECS: 207-801-6 
Molecular Formula: C16H14O 
Molecular Structure:

Formula Weight: 222.28 g/mol
Index of Refraction: 1.586 
Density: 1.06 g/cm3 
Flash Point: 150.1 °C 
Boiling Point: 342.5 °C at 760 mmHg 

Toxicity Data With Reference

The toxicity of Dypnone (CAS NO.495-45-4): 

1.    

skn-rbt 10 mg/24H open MLD

     JIHTAB    Journal of Industrial Hygiene and Toxicology. 31 (1949),60.
2.    

eye-rbt 500 mg

     AJOPAA    American Journal of Ophthalmology. 29 (1946),1363.
3.    

orl-rat LD50:3600 mg/kg

     JIHTAB    Journal of Industrial Hygiene and Toxicology. 31 (1949),60.
4.    

skn-rbt LD50:6300 mg/kg

     JIHTAB    Journal of Industrial Hygiene and Toxicology. 31 (1949),60.

Safety Profile

The safety information of Dypnone (CAS NO.495-45-4):
Moderately toxic by ingestion. Mildly toxic by skin contact. A skin and eye irritant. Flammable liquid when exposed to heat or flame; can react with oxidizing materials. To fight fire, use alcohol foam; CO2, dry chemical. Used as a sunscreen. When heated to decomposition it emits acrid smoke and irritating fumes. See also KETONES.

Standards and Recommendations

DOT Classification:  3; Label: Flammable Liquid