Chloroformic acid n- butyl ester

Structural formula
General
Surname	Chloroformic acid n- butyl ester
other names	Butyl chloroformate; Butyl chloroformate;
Molecular formula	C 5 H 9 ClO 2
Brief description	colorless liquid with a pungent odor
External identifiers / databases
EC number	209-750-5
ECHA InfoCard	100.008.865
PubChem	61140
Wikidata	Q22668707
properties
Molar mass	136.58 g mol −1
Physical state	liquid
density	1.06 g cm −3
Melting point	−70 ° C
boiling point	approx. 138 ° C
Vapor pressure	7.2 hPa (20 ° C)
solubility	decomposes in water; miscible with ether; soluble in acetone and ethanol; slightly soluble in carbon tetrachloride;
Refractive index	1.412 (20 ° C)
safety instructions
H and P phrases	H: 226-302-330-314
	EUH: 071
	P: 210-280-301 + 330 + 331-303 + 361 + 353-304 + 340 + 311-305 + 351 + 338
Toxicological data	1325–2610 mg kg −1 ( LD 50 , rat , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Chloroformic acid n- butyl ester is a chemical compound from the group of carboxylic acid esters .

Extraction and presentation

The compound can be prepared by reacting phosgene and anhydrous n -butanol .

properties

Chloroformic acid n- butyl ester is a non-volatile, flammable, colorless liquid with a pungent odor that decomposes in water. There is slow hydrolysis to 1-butanol , hydrochloric acid and carbonic acid . It decomposes when heated.

nomenclature

The common name “chloroformic acid n- butyl ester” is incorrect, as it is a derivative of carbonic acid , not a derivative of formic acid . It is the monochloride and at the same time the monobutyl ester of carbonic acid.

use

Chloroformate n -butyl ester is used as an intermediate for the chemical industry, in particular for producing peroxydicarbonates and pesticides used.

safety instructions

The vapors of chloroformic acid n- butyl ester can form an explosive mixture with air ( flash point approx. 30 ° C, ignition temperature 285 ° C).

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l Entry on butyl chloroformate in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
↑ ^a ^b ^c ^d ^e ^f ^g Toxicological assessment of butyl chloroformate (PDF) from the trade association for raw materials and chemical industry (BG RCI), accessed on November 12, 2015.
↑ ^a ^b Data sheet Butyl chloroformate, 98% from Sigma-Aldrich , accessed on November 12, 2015 ( PDF ).
↑ Entry on Butyl chloroformate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l Entry on butyl chloroformate in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .

[bgrci.de-2] ↑ ^a ^b ^c ^d ^e ^f ^g Toxicological assessment of butyl chloroformate (PDF) from the trade association for raw materials and chemical industry (BG RCI), accessed on November 12, 2015.

[Sigma-3] Data sheet Butyl chloroformate, 98% from Sigma-Aldrich , accessed on November 12, 2015 ( PDF ).

[CLP_100.008.865-4] Entry on Butyl chloroformate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .