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CAS No.: | 75-71-8 |
---|---|
Name: | Dichlorodifluoromethane |
Article Data: | 195 |
Molecular Structure: | |
Formula: | CCl2F2 |
Molecular Weight: | 120.914 |
Synonyms: | Algofrene type 2;CCRIS 3501;CFC-12;Chlorofluorocarbon 12;Diclorodifluometano;Dwuchlorodwufluorometan;Dymel 12;Electro-CF 12;Eskimon 12;F 12;FCC 12;FKW 12;Fluorocarbon-12;UNII-OFM06SG1KO; |
EINECS: | 200-893-9 |
Density: | 1.535 g/cm3 |
Melting Point: | -157.7 °C |
Boiling Point: | -29.8 °C |
Flash Point: | 11 °C |
Solubility: | Water: 0.028 g/100 mL |
Appearance: | colourless odourless gas |
Hazard Symbols: | Xi,Xn,N,T,F |
Risk Codes: | 20-59-23/25-11-39/23/24/25-23/24/25 |
Safety: | 23-24/25-59-61-45-24-16-7-36/37 |
Transport Information: | UN 1230 3/PG 2 |
PSA: | 0.00000 |
LogP: | 2.01430 |
Conditions | Yield |
---|---|
With ClSO3F for 3h; Ambient temperature; | 85% |
1,3-dichloro-1,1,3,3-tetrafluoro-propan-2-one
A
Dichlorodifluoromethane
B
chlorodifluoroacetyl fluoride
C
C3Cl3F5O
Conditions | Yield |
---|---|
With chlorine monofluoride; cesium fluoride 1.) -140 degC to -65 degC over 6 h, 2.) -65 degC, 4 h; | A n/a B n/a C 80% |
difluoro-methylene
A
chlorotrifluoromethane
B
Dichlorodifluoromethane
C
trichlorofluoromethane
Conditions | Yield |
---|---|
With chlorine | A 20% B 70% C 10% |
With Cl2 | A 20% B 70% C 10% |
phosgene
hydrogen fluoride
chlorine
A
carbon tetrafluoride
B
chlorotrifluoromethane
C
Dichlorodifluoromethane
Conditions | Yield |
---|---|
With catalyst : charcoal heating in autoclave, 425°C, 17 h, charcoal impregnated with FeCl3; | A 4% B 57% C 14% |
antimony dichloride trifluoride
difluorochloro nitromethane
A
chlorotrifluoromethane
B
Dichlorodifluoromethane
Conditions | Yield |
---|---|
at 100°C 6 h; | A 53% B 8% |
at 100°C 6 h; | A 53% B 8% |
phosgene
hydrogen fluoride
chlorine
A
tetrachloromethane
B
chlorotrifluoromethane
C
Dichlorodifluoromethane
D
trichlorofluoromethane
Conditions | Yield |
---|---|
With catalyst : charcoal heating in autoclave, 350°C, 6 h, charcoal impregnated with FeCl3; | A 7% B 13% C 47% D 7% |
methane
Dichlorodifluoromethane
Conditions | Yield |
---|---|
With chromium fluoride; hydrogen fluoride; chlorine; pyrographite at 275 - 340℃; | |
With calcium fluoride; sulfur trioxide; calcium chloride at 350 - 400℃; |
Conditions | Yield |
---|---|
With chlorine at 350℃; |
Conditions | Yield |
---|---|
With antimonypentachloride; antimony(III) fluoride Einw. von Chlor auf das entstandene Methylenfluorid; |
Conditions | Yield |
---|---|
With hydrogen fluoride; lithium fluoride at -2℃; Electrolysis; |
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The Dichlorodifluoromethane with CAS registry number of 75-71-8 is also known as Methane,dichlorodifluoro-. The IUPAC name and product name are the same. It belongs to product categories of CFC; Refrigerants; Organics; DIA-DICChemical Class; Alpha Sort; D; DAlphabetic; Fluoro; Halogenated; Volatiles/ Semivolatiles. Its EINECS registry number is 200-893-9. In addition, the formula is CCl2F2 and the molecular weight is 120.91.
Physical properties about Dichlorodifluoromethane are: (1)ACD/LogP: 2.19; (2)ACD/LogD (pH 5.5): 2.19; (3)ACD/LogD (pH 7.4): 2.19; (4)ACD/BCF (pH 5.5): 27.09; (5)ACD/BCF (pH 7.4): 27.09; (6)ACD/KOC (pH 5.5): 369.15; (7)ACD/KOC (pH 7.4): 369.15; (8)Index of Refraction: 1.343; (9)Molar Refractivity: 16.67 cm3; (10)Molar Volume: 78.7 cm3; (11)Polarizability: 6.6×10-24cm3; (12)Surface Tension: 18.3 dyne/cm; (13)Density: 1.535 g/cm3; (14)Enthalpy of Vaporization: 21.48 kJ/mol.
Preparation of Dichlorodifluoromethane: it is prepared by reaction of carbon tetrachloride with hydro fluoride. The reaction needs catalyst antimony pentachloride at the temperature of -5 °C.
Uses of Dichlorodifluoromethane: it can be used as refrigerant, fire extinguishing agent, pesticide and spray. It is used to produce trifluormethyl-dibrom-methylenimin by reaction with bis-trifluoromethyl-amine. The reaction occurs with reagent BBr3 at 100 °C for 16 hours. The yield is about 93%.
When you are using this chemical, please be cautious about it. As a chemical, it is highly flammable and dangerous for the ozone layer. What's more, it is danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed. During using it, wear suitable protective clothing and gloves. Avoid contact with skin and eyes and do not breathe gas/fumes/vapour/spray. Keep container tightly closed and away from sources of ignition. This material and its container must be disposed of as hazardous waste. In case of accident or if you feel unwell seek medical advice immediately.
You can still convert the following datas into molecular structure:
1. Canonical SMILES: C(F)(F)(Cl)Cl
2. InChI: InChI=1S/CCl2F2/c2-1(3,4)5
3. InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N
The toxicity data is as follows:
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
guinea pig | LC50 | inhalation | 80pph/30M (800000ppm) | European Journal of Toxicology and Environmental Hygiene. Vol. 9, Pg. 385, 1976. | |
human | TCLo | inhalation | 200000ppm/30M (200000ppm) | SENSE ORGANS AND SPECIAL SENSES: CONJUNCTIVE IRRITATION: EYE LUNGS, THORAX, OR RESPIRATION: FIBROSING ALVEOLITIS LIVER: OTHER CHANGES | European Journal of Toxicology and Environmental Hygiene. Vol. 9, Pg. 385, 1976. |
mouse | LC50 | inhalation | 3348gm/m3/3H (3348000mg/m3) | BEHAVIORAL: SLEEP BEHAVIORAL: EXCITEMENT BEHAVIORAL: TREMOR | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 28(6), Pg. 95, 1963. |
rabbit | LC50 | inhalation | 80pph/30M (800000ppm) | European Journal of Toxicology and Environmental Hygiene. Vol. 9, Pg. 385, 1976. | |
rat | LC | inhalation | > 80pph/4H (800000ppm) | National Technical Information Service. Vol. OTS0520424, | |
rat | LD | oral | > 5600ug/kg (5.6mg/kg) | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 52(3), Pg. 73, 1987. |