Calcium cyanamide, with more than 0.1% calcium carbide appears as a colorless to gray, odorless solid. May cause illness from ingestion. May irritate the skin. If exposed to water or high temperatures, calcium cyanamide may generate toxic and flammable fumes. Used to make pesticides and in fertilizers.
颜色/状态:
Pure calcium cyanamide occurs as glistening, hexagonal crystals belonging to the rhombohedral system
The structure of the major urinary metabolite of cyanamide, the active component of the alcohol deterrent agents Temposil , Dipsan , and Abstem , in rats, rabbits, and dogs has been established as N- acetylcyanamide by its identity with chemically synthesized N- acetylcyanamide , and by conversion of the metabolite and the synthetic product to identical derivatives, viz. to N-benzyl-N- acetylcyanamide and to N-(p-nitrobenzyl)-N- acetylcyanamide . The latter derivatives were analyzed by pulsed positive/negative ion chemical ionization mass spectroscopy. Urine from patients receiving cyanamide as a treatment mode was shown to contain N- acetylcyanamide by chemical ionization mass spectrometric analysis of the isolated p-nitrobenzyl derivative, thereby establishing that N- acetylcyanamide is also a metabolite in man. The major portion (87%) of the first 27-hr urinary radioactivity excreted by the dog after receiving a low dose of [14C]cyanamide (0.04 mmol/kg, po) was N- acetylcyanamide , as determined by inverse isotope dilution and measurement of the specific radioactivity of its N-p-nitrobenzyl derivative. This indicates that at low doses acetylation is also a major route of biotransformation of cyanamide in the dog. Hepatic N-acetyltransferase, isolated from the rabbit and dog, catalyzed the transfer of the acetyl group from acetyl-S-CoA to [14C]cyanamide producing N-acetyl[14C]cyanamide. The enzyme isolated from the liver of a rapid acetylator phenotype rabbit was twice as effective as the dog enzyme in catalyzing this transfer. Thus, the enzyme responsible for this biotransformation of cyanamide is an acetyl-S-CoA-dependent N-acetyltransferase.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
致癌性证据
A4;不可归类为人类致癌物。
A4; Not classifiable as a human carcinogen.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
致癌性证据
TLV-A4
TLV-A4
来源:Occupational Safety and Health Administration (OSHA)
毒理性
健康影响
健康影响代码:HE15 - 刺激-眼睛、鼻子、喉咙、皮肤-中等
Health Effect Code(s):HE15 - Irritation-Eyes, Nose, Throat, Skin---Moderate
来源:Occupational Safety and Health Administration (OSHA)
毒理性
暴露途径
该物质可以通过吸入和摄入进入人体,达到有害的数量。
The substance can be absorbed into the body in hazardous amounts by inhalation and by ingestion.
来源:ILO International Chemical Safety Cards (ICSC)
毒理性
暴露途径
吸入,吞食,皮肤和/或眼睛接触
inhalation, ingestion, skin and/or eye contact
来源:The National Institute for Occupational Safety and Health (NIOSH)