National Toxicology Program

Selected information from two of the National Library of Medicine's databases: ChemIDPlus¹ and HSDB².

Names (NTP)

• Acetylchloride
• ETHANOYL CHLORIDE

Structure

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Chemical Properties²

Property	Description
Color/Form	Colorless fuming liquid
Odor	Pungent odor Sharp odor
Taste	None found
Boiling Point	52 deg C
Melting Point	-112 deg C
Molecular Weight	78.50
Corrosivity	Is highly corrosive to most metals in the presence of moisture.
Critical Temperature & Pressure	Critical temperature: 475 deg F = 246 deg C = 519 deg K; Critical pressure: 845 psia = 57.5 atm = 5.83 MN/sq m
Density/Specific Gravity	1.1051 @ 20 deg C/4 deg C
Disassociation Constants	None found
Heat of Combustion	-6,000 btu/lb= -3,000 cal/g= -140X10X5 J/kg
Heat of Vaporization	160 btu/lb= 88 cal/g= 3.7X10X5 J/kg
log P (octanol-water)	None found
pH	None found
Solubilities	Miscible with benzene, chloroform, ether, glacial acetic acid, petroleum ether Sol in acetone; /SRP: sol in water/ Sol in acetic acid
Spectral Properties	Index of refraction: 1.3898 at 20 deg C/D MAX ABSORPTION (PETROLEUM ETHER): 220 NM (LOG E= 2.01); SADTLER REF NUMBER: 6030 (IR, PRISM) (GAS) IR: 6165 (Coblentz Society Spectral Collection) UV: 420 (Sadtler Research Laboratories Spectral Collection) NMR: 167 (Varian Associates NMR Spectra Catalogue) MASS: 97 (Atlas of Mass Spectral Data, John Wiley & Sons, New York)
Surface Tension	26.7 dynes/cm at 14.8 deg C in contact with vapor
Vapor Density	2.70 (air= 1)
Vapor Pressure	287 mm Hg @ 25 deg C
Relative Evaporation Rate	None found
Viscosity	None found
Other Properties	Highly refractive Ratio of specific heats of vapor: 1.1467 Liquid heat capacity: 0.350 Btu/lb-F at 70 deg F Saturated liquid density: 68.849 lb/cu ft at 70 deg F Ideal gas heat capacity: 0.203 Btu/lb-F at 100 deg F Liquid thermal conductivity: 1.065 Btu-inch/hr-sq ft-F at 70 deg F Saturated vapor pressure: 4.440 lb/sq in at 70 deg F Saturated vapor density: 0.06130 lb/cu ft at 70 deg F Hydroxyl radical rate constant = 9.10X10-15 cu-cm/molc sec @ 25 deg C

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Uses²

• Acetylating agent; in testing for cholesterol; determination of water in organic liq
  
• Mfr of dyestuffs; pharmaceuticals
  
• Used to produce acetamide by reacting with anhydrous ammonia.
  
• Used to produce acetyl sulfide by reacting with potassium sulfide.
  
• Used to produce thioacetic acid by reacting with potassium hydrogen sulfide.
  
• Laboratory use includes the qualitative organic analysis for distinguishing tertiary amines from primary and secondary amines, determining hydroxyl groups and serves as a chlorinating agent for inorganic compounds and triarylcarbinols.
  
• Used in the synthesis of dienestrol diacetate.
  
• Esterification/acid chlorination catalyst
  
• Used as a chemical intermediate for the synthesis of 4-acetyl-1,1-dimethyl-6-t-butylindane; 6-acetyl-1,1,2-3,3,5-hexamethylindane; 6-acetyl-1,1,2,4,4,7-hexamethyltetralin; o-aminoacetophenone; p-aminoacetophenone; 2-amino-5-methyl-1,3,4-thiadiazole; t-butylperoxyacetate; fenfluramine; flurbiprofen; fluridone; ibuprofen; methyl 3-amino-4-methylthiophene-2-carboxylate; methyl beta-naphthyl ketone; naproxen
  

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Superlist Classes¹

• Reportable Quantity (RQ) = 5000 lb
  

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Notes (Sources: NTP,HSDB,RTECS,MESH)¹

• None found

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Other Registry Numbers¹

• None found

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Synonyms (Sources: NTP, HSDB,RTECS,MESH)¹

• 4-02-00-00395 (Beilstein Handbook Reference)
• Acetic acid, chloride
• Acetic chloride
• BRN 0605303
• Ethanoyl chloride
• HSDB 662
• RCRA waste number U006

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Links to Additional Information¹

• PubMed Cancer
• CCRIS
• EINECS
• EMIC
• Haz-Map
• HSDB
• IRIS
• ITER
• PubMed
• MeSH
• PubMed Toxicology
• TOXLINE
• PubChem

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Footnotes

¹ Source: the National Library of Medicine's ChemIDPlus, 10/28/2007.

² Source: the National Library of Medicine's Hazardous Substance Database, 10/28/2007.