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Cas Database |
| Name |
Dichlorodifluoromethane |
EINECS | 200-893-9 |
| CAS No. | 75-71-8 | Density | 1.535 g/cm3 |
| PSA | 0.00000 | LogP | 2.01430 |
| Solubility | Water: 0.028 g/100 mL | Melting Point |
-157.7 °C |
| Formula | CCl2F2 | Boiling Point | -29.8 °C |
| Molecular Weight | 120.914 | Flash Point | 11 °C |
| Transport Information | UN 1230 3/PG 2 | Appearance | colourless odourless gas |
| Safety | 23-24/25-59-61-45-24-16-7-36/37 | Risk Codes | 20-59-23/25-11-39/23/24/25-23/24/25 |
| Molecular Structure |
|
Hazard Symbols |
 Xi, Xn, N, T, F
|
| 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; |
Article Data | 195 |
Dichlorodifluoromethane Synthetic route
| Conditions | Yield |
|---|---|
| With ClSO3F for 3h; Ambient temperature; | 85% |
- 127-21-9
1,3-dichloro-1,1,3,3-tetrafluoro-propan-2-one
A
- 75-71-8
Dichlorodifluoromethane
B
- 354-27-8
chlorodifluoroacetyl fluoride
C
- 152239-91-3
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% |
- 2154-59-8
difluoro-methylene
A
- 75-72-9
chlorotrifluoromethane
B
- 75-71-8
Dichlorodifluoromethane
C
- 75-69-4
trichlorofluoromethane
| Conditions | Yield |
|---|---|
| With chlorine | A 20% B 70% C 10% |
| With Cl2 | A 20% B 70% C 10% |
- 75-44-5
phosgene
- 7664-39-3
hydrogen fluoride
- 7782-50-5
chlorine
A
- 75-73-0
carbon tetrafluoride
B
- 75-72-9
chlorotrifluoromethane
C
- 75-71-8
Dichlorodifluoromethane
| Conditions | Yield |
|---|---|
| With catalyst : charcoal heating in autoclave, 425°C, 17 h, charcoal impregnated with FeCl3; | A 4% B 57% C 14% |
- 7791-16-4
antimony dichloride trifluoride
- 421-56-7
difluorochloro nitromethane
A
- 75-72-9
chlorotrifluoromethane
B
- 75-71-8
Dichlorodifluoromethane
| Conditions | Yield |
|---|---|
| at 100°C 6 h; | A 53% B 8% |
| at 100°C 6 h; | A 53% B 8% |
- 75-44-5
phosgene
- 7664-39-3
hydrogen fluoride
- 7782-50-5
chlorine
A
- 56-23-5
tetrachloromethane
B
- 75-72-9
chlorotrifluoromethane
C
- 75-71-8
Dichlorodifluoromethane
D
- 75-69-4
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% |
- 34557-54-5
methane
- 75-71-8
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; |
Dichlorodifluoromethane Consensus Reports
Dichlorodifluoromethane Standards and Recommendations
ACGIH TLV: TWA 1000 ppm; Not Classifiable as a Human Carcinogen
DFG MAK: 1000 ppm (5000 mg/m3)
DOT Classification: 2.2; Label: Nonflammable Gas
Dichlorodifluoromethane Analytical Methods
Dichlorodifluoromethane Specification
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. |
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