Acetamide
Hazard Summary-Created in April 1992; Revised in January 2000
Acetamide is used primarily as a solvent and a plasticizer. Workers may be exposed in the plastics and chemical industries. It causes mild skin irritation from acute (short-term) exposure. No information is available on the chronic (long-term), reproductive/developmental, or carcinogenic effects of acetamide in humans. EPA has not classified acetamide for carcinogenicity.
Please Note: The main source of information for this fact sheet is the Hazardous Substances Data Bank (HSDB), a database of summaries of peer-reviewed literature. Other secondary sources include the Registry of Toxic Effects of Chemical Substances (RTECS), a database of toxic effects that are not peer reviewed, and the IARC Monographs on Chemicals Carcinogenic to Humans.
Uses
- Acetamide is used as a solvent, plasticizer, and a wetting and penetrating agent. (1)
Sources and Potential Exposure
- Occupational exposure to acetamide may occur for those workers in the plastics and chemical industries. (1)
Assessing Personal Exposure
- No information is available on the assessment of personal exposure to acetamide.
Health Hazard Information
Acute Effects:- Acetamide causes mild skin irritation in humans from acute exposure. (1)
- Tests involving acute exposure of rats and mice have shown acetamide to have low to moderate acute toxicity from oral exposure. (2)
- No information is available on the chronic effects of acetamide in humans or animals.
- The Reference Concentration (RfC) for acetamide is under review by EPA.
- EPA has not established a Reference Dose (RfD) for acetamide.
- No information is available on the reproductive or developmental effects of acetamide in humans.
- Animal studies have not reported any significant developmental effects from exposure to acetamide. (1)
- No information is available on the carcinogenic effects of acetamide in humans.
- Animal studies have reported liver tumors from oral exposure to acetamide. (1,3,4,5)
- EPA has not classified acetamide for carcinogenicity.
- The International Agency for Research on Cancer (IARC) has classified acetamide as a Group 2B, possible human carcinogen. (3)
- The California Environmental Protection Agency (CalEPA) has established an inhalation unit risk estimate of 2.0x10-5(µg/m3)-1 and an oral cancer slope factor of 7.0x10-2(mg/kg/d)-1 for acetamide (5)
Physical Properties
- Acetamide exists as hexagonal crystals. (1)
- The odor threshold for acetamide is 140 to 160 milligrams per cubic meter (mg/m3). (1)
- The chemical formula for acetamide is C2H5NO, and the molecular weight is 59.07 g/mol. (1)
- The vapor pressure for acetamide is 1 mm Hg at 65 °C, and it has a log octanol/water partition coefficient (log Kow) of -1.26. (1,6)
Note: There are very few health numbers or regulatory/advisory numbers for acetamide; thus, a graph has not been prepared for this compound. The health values cited in this factsheet were obtained in December 1999.
Conversion Factors:
To convert concentrations in air (at 25°C) from ppm to mg/m3: mg/m3 = (ppm) × (molecular weight of the compound)/(24.45). For acetamide: 1 ppm = 2.41 mg/m3.References
- U.S. Department of Health and Human Services. Hazardous Substances Data Bank (HSDB, online database). National Toxicology Information Program, National Library of Medicine, Bethesda, MD. 1993.
- U.S. Department of Health and Human Services. Registry of Toxic Effects of Chemical Substances (RTECS, online database). National Toxicology Information Program, National Library of Medicine, Bethesda, MD. 1993.
- International Agency for Research on Cancer (IARC). IARC Monographs on the Evaluation of Carcinogenic Risk to Humans. Supplement 7. World Health Organization, Lyon. 1987.
- International Agency for Research on Cancer (IARC). IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. Volume 7. World Health Organization, Lyon. 1974.
- California Environmental Protection Agency (CalEPA). Air Toxics Hot Spots Program Risk Assessment Guidelines: Part II. Technical Support Document for Describing Available Cancer Potency Factors. 1999. Office of Environmental Health Hazard Assessment, Berkeley, CA. 1999.
- Sigma-Aldrich Corporation. Material Safety Data Sheet on Acetamide. Sigma-Aldrich Corporation, Milwaukee, WI. 1992.