IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 56.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 39 ,1986,p. 227.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Reported in EPA TSCA Inventory.

ACGIH TLV: TWA 500 ppm; Not Classifiable as a Human Carcinogen
DFG MAK: Confirmed Animal Carcinogen with Unknown Relevance to Humans
DOT Classification:  2.1; Label: Flammable Gas
NIOSH REL: (Vinyl Halides) TWA reduce to lowest detectable level

The Vinylidene fluoride, with the CAS registry number 75-38-7 and EINECS registry number 200-867-7, has the systematic name of 1,1-difluoroethene. It is a colorless gas, and bleongs to the following product categories: CFC; Refrigerants; Organics. It is slightly soluble in water and soluble in alcohol and ether. And the molecular formula of this chemical is C₂H₂F₂.

The physical properties of Vinylidene fluoride are as following: (1)ACD/LogP: 1.25; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.25; (4)ACD/LogD (pH 7.4): 1.25; (5)ACD/BCF (pH 5.5): 5.24; (6)ACD/BCF (pH 7.4): 5.24; (7)ACD/KOC (pH 5.5): 113.84; (8)ACD/KOC (pH 7.4): 113.84; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: Å²; (13)Index of Refraction: 1.264; (14)Molar Refractivity: 11.21 cm³; (15)Molar Volume: 67.3 cm³; (16)Polarizability: 4.44×10^-24cm³; (17)Surface Tension: 8.7 dyne/cm; (18)Density: 0.95 g/cm³.

Preparation and uses of Vinylidene fluoride: Dry acetylene reacts with hydrofluoric acid in the presence of fluosulfonic acid, and gives 1,1-difluoroethane. Then mix with a certain amount of chlorine in the temperaure of 650-680 °C. Through a series of pyrogenation, you can get the vinylidene fluoride. In addition, it is usually used to produce polyvinylidene fluoride(PVDF), a kind of irradiation resistance material. It is also used as raw material of fluor resin and fluorubber.

You should be cautious while dealing with this chemical. It is a kind of extremely flammable chemical. Therefore, you had better take the following instructions: Keep away from sources of ignition - No smoking; Keep container tightly closed and in a well-ventilated place.

You can still convert the following datas into molecular structure:
(1)SMILES: C=C(F)F
(2)InChI: InChI=1/C2H2F2/c1-2(3)4/h1H2
(3)InChIKey: BQCIDUSAKPWEOX-UHFFFAOYAV

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
guinea pig	LCLo	inhalation	800ppb/4H (0.8ppm)		National Technical Information Service. Vol. OTS0523847,
rat	LCLo	inhalation	128000ppm/4H (128000ppm)	LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES	Journal of Occupational Medicine. Vol. 4, Pg. 262, 1962.