品名

四氟甲烷; 四氟化碳; Tetrafluoromethane; Carbon tetrafluoride; Freon 14; CAS：75-73-0

理化性质

无色气体。分子式C-F4。分子量88.01。相对密度1.89(-183℃液体)。熔点-184℃。沸点-127.7℃。热稳定。化学性质较不活泼。不能与铝共存。

接触机会

可作致冷剂和气体绝缘体。

国内主要生产厂商:中国科学院上海有机化学研究所实验厂

侵入途径

呼吸道吸入。

毒理学简介

大鼠吸入LCLo: 895000 ppm/15M。

属低毒类。对呼吸道有刺激,高浓度时具有麻醉作用。

临床表现

未见急性中毒病例报道。

美国HSDB引用文献：

*.../CNS DEPRESSION/ IN HIGH CONCENTRATION. [R2]

*...CAUSE OF DEATH /FROM ABUSE OF FLUOROCARBONS/...IN...DOUBT. ... LARYNGEAL SPASM OR EDEMA, OXYGEN DISPLACEMENT, OR SENSITIZATION OF MYOCARDIUM TO ENDOGENOUS CATECHOLAMINES WITH...VENTRICULAR FIBRILLATION APPEAR TO BE...POSSIBILITIES. /FLUOROCARBON REFRIGERANTS & PROPELLANTS/ [R7]

*FREEZING OF AIRWAY SOFT TISSUES CAN PROBABLY BE ELIMINATED AS A CAUSE OF DEATH EXCEPT IN CASES WHERE PRODUCT WAS SPRAYED DIRECTLY INTO MOUTH FROM ITS CONTAINER OR FROM BALLOON CONTAINING SOME LIQUID. /FLUOROCARBON REFRIGERANTS & PROPELLANTS/ [R7]

*EARLY...HUMAN EXPERIENCE INDICATED THAT HIGH VAPOR CONCN (EG, 20%) MAY CAUSE CONFUSION, PULMONARY IRRITATION, TREMORS & RARELY COMA, BUT...THESE EFFECTS...GENERALLY TRANSIENT & WITHOUT LATE SEQUELAE. /FLUOROCARBON REFRIGERANTS & PROPELLANTS/ [R7]

处理

对症处理。

标准

危规：GB2.2类22033。UN NO.1982。IMDG CODE 2116页,2类。

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