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75-46-7

Basic Information
CAS No.: 75-46-7
Name: Methane, trifluoro-
Article Data: 434
Cas Database
Molecular Structure:
Molecular Structure of 75-46-7 (Methane, trifluoro-)
Formula: CHF3
Molecular Weight: 70.0141
Synonyms: Arcton 1;Carbon trifluoride;Ecolo Ace 23;FC 23;FC 23 (fluorocarbon);FE 13;Fluoroform;Fluoryl;Freon 23;Fron 23;Genetron 23;HCFC 23;HFC 23;Methyltrifluoride;R 23;R 23 (halocarbon);Trifluoromethane (CHF3);
EINECS: 200-872-4
Density: 1.133 g/cm3
Melting Point: -160 °C(lit.)
Boiling Point: −84°C(lit.)
Flash Point: N/A
Solubility: Slightly soluble in water
Appearance: colourless gas
Hazard Symbols: FlammableF
Risk Codes: N/A
Safety: 38
Transport Information: UN 1984/2599
PSA: 0.00000
LogP: 1.17850
Synthetic route
677-31-6

Dimethyl-trifluormethyl-wismut

75-46-7

trifluoromethan

Conditions
ConditionsYield
With sodium hydroxide In water in hot 5n NaOH solution;100%
In water
421-59-0

trifluoromethyldiiodophosphine

A

sodium phosphite

B

75-46-7

trifluoromethan

C

7681-82-5

sodium iodide

Conditions
ConditionsYield
With NaOH In water 20°C (24 h); hydrolysis;A n/a
B 99.5%
C 100%
684-13-9

Methyl-bis-trifluormethyl-wismut

75-46-7

trifluoromethan

Conditions
ConditionsYield
With sodium hydroxide In water in hot 5n NaOH solution;100%
In water
1998-70-5

Diethyl-trifluormethyl-wismut

75-46-7

trifluoromethan

Conditions
ConditionsYield
With sodium hydroxide In water in 5n NaOH solution;100%
In water
1683-91-6

Ethyl-bis-trifluormethyl-wismut

75-46-7

trifluoromethan

Conditions
ConditionsYield
With sodium hydroxide In water in hot 5n NaOH;100%
In water

hydroxide

358-15-6

Trifluoro-methanethiosulfonic acid S-trifluoromethyl ester

A

75-46-7

trifluoromethan

B

fluoride

C

sulfide ion

Conditions
ConditionsYield
at 95°C, hydrolysis;A 60%
B 39%
C 99%
1486-19-7

Bis(trifluormethyl)-monothiophosphinigsaeure

75-46-7

trifluoromethan

Conditions
ConditionsYield
With NaOH In not given hydrolysis at 60-70°C (3 d);99%
431-97-0

Bis(trifluormethyl)-cyanophosphan

1310-73-2

sodium hydroxide

75-46-7

trifluoromethan

Conditions
ConditionsYield
In water hydrolysis with 10 % aq. NaOH;;99%
75355-40-7

dimethyltrifluoromethylarsenic dichloride

75-46-7

trifluoromethan

Conditions
ConditionsYield
With sodium hydroxide for 4h; Ambient temperature; hydrolysis in sealed tube;98.8%
56-40-6

glycine

111727-31-2

methyl (chloromethyl)(trifluoromethyl)phosphinate

A

75-46-7

trifluoromethan

B

1071-83-6

N-(phosphonemethyl)glycine

Conditions
ConditionsYield
With sodium hydroxide In ethanol; water at 20℃; Rate constant;A 98%
B 49%
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    Trifluoromethane Basic information Product Name: Trifluoromethane Synonyms: Arcton 1;arcton1;CHF3;EcoloAce23;fc23(fluorocarbon);FE13;Fluoryl;

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    Trifluoromethane

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    Physicalproperties Molecularformula&nAppearance:Pure Package:380kg/ ton Tank,40L cylinder Application:Lower refrigeration Transportation:By Sea Port:Ningbo / Shanghai

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History

 Fluoroform (75-46-7) was first obtained by Maurice Meslans in the violent reaction of iodoform with dry silver fluoride in 1894.The reaction was improved by Otto Ruff by substitution of silver fluoride by a mixture of mercury fluoride and calcium fluoride.The exchange reaction works with iodoform and bromoform, and the exchange of the first two halogen atoms is vigorous by fluorine.and the first efficient synthesis method was found by Henne.According to researchers, it is the most abundant of Hydrofluorocarbons (HFCs). Its usage has been regulated since December 1997 at Kyoto climate conference. To mitigate its impact, CHF3 can be destroyed with electric plasma arc technologies or by high temperature incineration.

Consensus Reports

EPA Genetic Toxicology Program. Reported in EPA TSCA Inventory.

Standards and Recommendations

DOT Classification:  2.2; Label: Nonflammable Gas

Specification

The Fluoroform, with the CAS registry number 75-46-7, is also known as Carbon trifluoride. It belongs to the product categories of Refrigerants; Organics. Its EINECS registry number is 200-872-4. This chemical's molecular formula is CHF3 and molecular weight is 70.01. What's more, its IUPAC name is same with its product name. It is one of the "haloforms" and it is a potent greenhouse gas. And it is also generated biologically in small amounts apparently by decarboxylation of trifluoroacetic acid. In addition, it should be kept in a cool and ventilated place.

Physical properties about Fluoroform are: (1)ACD/LogP: 0.48; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.48; (4)ACD/LogD (pH 7.4): 0.48; (5)#H bond acceptors: 0; (6)#H bond donors: 0; (7)#Freely Rotating Bonds: 0; (8)Polar Surface Area: Å2; (9)Index of Refraction: 1.179; (10)Molar Refractivity: 7.13 cm3; (11)Molar Volume: 61.7 cm3; (12)Surface Tension: 6.2 dyne/cm; (13)Density: 1.133 g/cm3; (14)Enthalpy of Vaporization: 17.17 kJ/mol at 760 mmHg; (15)Vapour Pressure: 25200 mmHg at 25 °C.

Preparation of Fluoroform: this chemical can be prepared by Ethanol with Difluoro-fluorosulfonyl-acetic acid. This reaction needs solvent acetonitrile at temperature of 50 °C. The reaction time is 1 hour. The yield is 53 %.

Fluoroform can be prepared by Ethanol with Difluoro-fluorosulfonyl-acetic acid.

Uses of Fluoroform: (1) this chemical is used in diverse niche applications and is produced as a by-product of the manufacture of Teflon. It is used in the semiconductor industry in plasma etching of silicon nitride and silicon oxide. The production is also a useful refrigerant, and is a byproduct of its manufacture; (2) this chemical is used to produce other chemicals. For example, it is used to produce Deuterio-trifluoro-methane. The reaction occurs with reagents potassium carbonate, deuterium oxide at temperature of 120 °C.

Fluoroform is used to produce Deuterio-trifluoro-methane.

When you are dealing with this chemical, you should be very careful. This chemical may catch fire in contact with air, only need brief contact with an ignition source and have a very low flash point or evolve highly flammable gases in contact with water. In case of insufficient ventilation you should wear suitable respiratory equipment.

You can still convert the following datas into molecular structure:
(1) SMILES: FC(F)F
(2) InChI: InChI=1S/CHF3/c2-1(3)4/h1H
(3) InChIKey: XPDWGBQVDMORPB-UHFFFAOYSA-N