偏氟乙烯
偏氟乙烯用途
主要用作氟树脂、氟橡胶的单体原料
【用途二】
1,1-二氟乙烯主要用来生产聚偏氟乙烯,将1,1-二氟乙烯以水为介质,过硫酸钾为引发剂,另加缓冲剂,在聚合釜中聚合,温度为50-95℃,压力在3MPa左右,得到的粉状聚物经洗涤、干燥即为成品。这是氟塑料中的机械强度高的产品,可用一般热塑性塑料加工方法成型。具有极好的耐气候性、化学稳定性、耐热性,可用作化工用管道、管件、阀门、泵和贮槽等衬里、防腐隔膜,化工机械用密封件、齿轮、轴承等。在电子电气工业中也有很多重要的用途。也用作特种溶剂。
偏氟乙烯名称
[ CAS 号 ]:
75-38-7
[ 中文名 ]:
偏氟乙烯
[ 英文名 ]:
1,1-difluoroethylene
[中文别名 ]:
[英文别名 ]:
- EINECS 200-867-7
- halocarbon1132a
- difluoroethylene
- CH2=CF2
- R1132A
- vinylidene difluoride
- MFCD00000448
- Genetron 1132a
- 2,2-difluoroethylene
- FC-1132A
偏氟乙烯物理化学性质
[ 密度 ]:
0,617 g/cm3
[ 沸点 ]:
−83 °C(lit.)
[ 熔点 ]:
−144 °C(lit.)
[ 分子式 ]:
C2H2F2
[ 分子量 ]:
64.03410
[ 闪点 ]:
<-60ºC
[ 精确质量 ]:
64.01250
[ LogP ]:
1.39660
[ 外观性状 ]:
无色气体
[ 蒸汽密度 ]:
2.2 (vs air)
[ 蒸汽压 ]:
518 psi ( 21 °C)
[ 折射率 ]:
1.264
[ 储存条件 ]:
库房通风低温干燥,与氧化剂分开存放
偏氟乙烯MSDS
偏氟乙烯毒性和生态
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- KW0560000
- CHEMICAL NAME :
- Ethylene, 1,1-difluoro-
- CAS REGISTRY NUMBER :
- 75-38-7
- LAST UPDATED :
- 199710
- DATA ITEMS CITED :
- 17
- MOLECULAR FORMULA :
- C2-H2-F2
- MOLECULAR WEIGHT :
- 64.04
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- LCLo - Lowest published lethal concentration
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 128000 ppm/4H
- TOXIC EFFECTS :
- Lungs, Thorax, or Respiration - other changes
- TYPE OF TEST :
- LCLo - Lowest published lethal concentration
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - guinea pig
- DOSE/DURATION :
- 800 ppb/4H
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- TYPE OF TEST :
- TCLo - Lowest published toxic concentration
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 1500 ppm/6H/13W-I
- TOXIC EFFECTS :
- Liver - changes in liver weight Kidney, Ureter, Bladder - changes in bladder weight Blood - changes in erythrocyte (RBC) count
- TYPE OF TEST :
- TCLo - Lowest published toxic concentration
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 40000 ppm/6H/13W-I
- TOXIC EFFECTS :
- Behavioral - excitement Blood - pigmented or nucleated red blood cells Skin and Appendages - hair
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 1930 mg/kg/52W-I
- TOXIC EFFECTS :
- Tumorigenic - neoplastic by RTECS criteria Sense Organs and Special Senses (Ear) - effect, not otherwise specified Skin and Appendages - tumors
MUTATION DATA
- TYPE OF TEST :
- Mutation in microorganisms
- TEST SYSTEM :
- Bacteria - Salmonella typhimurium
- REFERENCE :
- ARTODN Archives of Toxicology. (Springer-Verlag, Heidelberger Pl. 3, D-1000 Berlin 33, Fed. Rep. Ger.) V.32- 1974- Volume(issue)/page/year: 41,249,1979 *** REVIEWS *** IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 39,227,1986 IARC Cancer Review:Human No Adequate Data IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 39,227,1986 IARC Cancer Review:Group 3 IMSUDL IARC Monographs, Supplement. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) No.1- 1979- Volume(issue)/page/year: 7,56,1987 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-FINLAND;Carcinogen JAN 1993 OEL-GERMANY;Carcinogen JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO VINYLIDENE FLUORIDE-air:use 29 CFR 1910.1017 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 80234 No. of Facilities: 41 (estimated) No. of Industries: 2 No. of Occupations: 4 No. of Employees: 1467 (estimated)
偏氟乙烯安全信息
[ 危害码 (欧洲) ]:
F+,F
[ 风险声明 (欧洲) ]:
R12
[ 安全声明 (欧洲) ]:
S16-S7/9
[ 危险品运输编码 ]:
UN 1959 2.1
[ WGK德国 ]:
3
[ RTECS号 ]:
KW0560000
[ 危险类别 ]:
2.1
偏氟乙烯上下游产品
偏氟乙烯上游产品
偏氟乙烯下游产品
偏氟乙烯制备
1.偏二氟乙烷氯化法 以干燥的乙炔在氟磺酸存在下与氢氟酸反应,生成1,1-二氟乙烷,经压缩、分馏、提纯,得精制1,1-二氟乙烷,将其与定量配比的氯气充分混合于650-680℃热解生成粗偏氟乙烯,再经压缩、分馏、提纯,得精单体。
2.其他方法 由于近年来氯氟烷替代物工业的发展,可采用以1,1,1-三氯乙烷一步反应制得1,1-二氟-1-氯乙烷,然后热裂解脱氯化氢。
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