Isobutylamine

Structural formula
General
Surname	Isobutylamine
other names	1-amino-2-methylpropane; i -butylamine; 2-methylpropylamine; iso- butylamine; iso -BA;
Molecular formula	C 4 H 11 N
Brief description	Highly flammable, volatile, colorless liquid with an amine-like odor
External identifiers / databases
EC number	201-145-4
ECHA InfoCard	100.001.042
PubChem	6558
Wikidata	Q416655
properties
Molar mass	73.14 g mol −1
Physical state	liquid
density	0.73
Melting point	−85 ° C
boiling point	66 ° C
Vapor pressure	149 h Pa (20 ° C); 237 hPa (30 ° C); 364 hPa (40 ° C); 539 hPa (50 ° C);
solubility	miscible with water; Easily soluble in ethanol and diethyl ether , soluble in acetone ;
Refractive index	1.397
safety instructions
H and P phrases	H: 225-301-314
	P: 210-280-301 + 310-305 + 351 + 338-310
MAK	DFG / Switzerland: 2 ml m −3 or 6.1 mg m −3
Toxicological data	240 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

Isobutylamine is a chemical compound from the group of aliphatic amines .

It is a primary amine and one of the four isomeric amines (besides tert -butylamine , n -butylamine and sec -butylamine ) of butane .

Occurrence

Isobutylamine occurs naturally in some algae and plants.

Extraction and presentation

Isobutylamine can be prepared by reacting isobutyraldehyde with ammonia in the presence of hydrogen .

properties

Physical Properties

Isobutylamine is a colorless liquid that boils at 66 ° C under normal pressure . According to Antoine, the vapor pressure function results from log ₁₀ (P) = A− (B / (T + C)) (P in Pa, T in K) with A = 5.9, B = 1051 and C = −70 in the temperature range from 248 to 347 K.

The aqueous solution of isobutylamine has a strongly alkaline reaction .

Safety-related parameters

The compound forms highly flammable vapor-air mixtures. It has a flash point of −13 ° C. The explosion range is between 1.9% by volume (57 g / m ³ ) as the lower explosion limit (LEL) and 10.8% by volume (330 g / m ³ ) as the upper explosion limit (UEL). The limit gap width was determined to be 1.15 mm. This results in an assignment to explosion group IIA. The ignition temperature is 370 ° C. The substance therefore falls into temperature class T2.

use

Isobutylamine is used to a small extent for organic synthesis and in insecticides .

safety instructions

Carcinogenic substances can form with nitrosating agents.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o Entry on isobutylamine in the GESTIS substance database of the IFA , accessed on April 8, 2019(JavaScript required) .

↑ ^a ^b Isobutylamine data sheet (PDF) from Merck , accessed on February 23, 2010 .

↑ Isobutylamine data sheet from Sigma-Aldrich , accessed on February 23, 2010 ( PDF ).

↑ Swiss Accident Insurance Fund (Suva): Limit values - current MAK and BAT values (search for 78-81-9 or isobutylamine ), accessed on November 2, 2015.

^ ^A ^b Philip Hall Howard, Handbook of Environmental Fate and Exposure Data for Organic Chemicals, ISBN 0-87371-204-8 .

↑ XVII. METHYLAMINE (fischer-tropsch) ( Memento of the original from September 17, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.

^ ^A ^b ^c ^d E. Brandes, W. Möller: Safety-related parameters - Volume 1: Flammable liquids and gases , Wirtschaftsverlag NW - Verlag für neue Wissenschaft GmbH, Bremerhaven 2003.

Web links

Commons : Isobutylamine - Collection of pictures, videos, and audio files

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o Entry on isobutylamine in the GESTIS substance database of the IFA , accessed on April 8, 2019(JavaScript required) .