sec -butylamine

Structural formula
Structural formula without stereochemistry
General
Surname	sec -butylamine
other names	2-aminobutane (±) -2-aminobutane ( RS ) -2-aminobutane ( R ) -2-aminobutane ( S ) -2-aminobutane Butan-2-amine sec -BA 1-methylpropylamine
Molecular formula	C 4 H 11 N
Brief description	colorless, volatile, highly flammable liquid with an amine-like odor
External identifiers / databases
CAS number 13952-84-6 ( racemate ) 513-49-5 [( S ) - sec -Butylamine] 13250-12-9 [( R ) - sec -Butylamine] PubChem 24874 Wikidata Q288208
properties
Molar mass	73.14 g mol −1
Physical state	liquid
density	0.72 g cm −3
Melting point	−104 ° C
boiling point	63 ° C
Vapor pressure	181 h Pa (20 ° C) 258 hPa (30 ° C) 434 hPa (40 ° C) 639 hPa (50 ° C)
solubility	miscible with water miscible with most organic solvents
Refractive index	1.387-1.393 (20 ° C)
safety instructions
GHS hazard labeling from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary danger H and P phrases H: 225-301-332-314-400 P: 210-273-280-301 + 330 + 331-304 + 340-305 + 351 + 338
MAK	DFG / Switzerland: 2 ml m −3 or 6.1 mg m −3
Toxicological data	152 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

sec -Butylamine is a chemical compound from the group of aliphatic amines . It is a primary amine and isomeric to n -butylamine , isobutylamine and tert -butylamine . sec -Butylamine is in the form of a colorless, volatile and highly flammable liquid.

history

sec -Butylamine was used as a fungicide for citrus fruits in the 1960s after detailed studies of its effects (Eckert and Kolbezen, 1962) .

properties

The vapors are 2.5 times as heavy as air.

Sec-butylamine forms highly flammable vapor-air mixtures. The compound has a flash point of −20 ° C. The explosion range is between 1.7% by volume (50 g / m ³ ) as the lower explosion limit (LEL) and 9.7% by volume (295 g / m ³ ) as the upper explosion limit (UEL). The ignition temperature is 290 ° C. The substance therefore falls into temperature class T3.

Stereoisomeric forms

sec -Butylamine occurs in two stereoisomeric forms [( R ) - or ( S ) - sec -Butylamine].

( R ) -enantiomer (left) and ( S ) -enantiomer (right)

Whenever " sec -Butylamine" is mentioned in this article or in the scientific literature without additional information on the configuration , the racemate [more precisely ( RS ) - sec -Butylamine or (±) - sec -Butylamine] is meant.

use

sec -Butylamine is used as an intermediate in the synthesis of various organic compounds and as a fungicide .

safety instructions

The vapors of sec -butylamine form an explosive mixture with air. Its flash point is −20 ° C.

Individual evidence

1. ↑ ^{a b c d e f g h i j k l m n o p} Entry on sec-butylamine in the GESTIS substance database of the IFA , accessed on February 1, 2016(JavaScript required) .
2. ↑ ^{a b} Joint Meeting on Pesticide Residues (JMPR), Monograph für Butylamine, sec- , accessed on December 9, 2014.
3. ↑ ^{a b} data sheet at the goods company (English)
4. ↑ Entry on sec-butylamine in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
5. ↑ Swiss Accident Insurance Fund (Suva): Limit values ​​- current MAK and BAT values , accessed on November 2, 2015.
6. ↑ Annual Review of Phytopathology, Vol. 23: pp. 421-454, September 1985 ( doi: 10.1146 / annurev.py.23.090185.002225 ).
7. ^ ^{A b c} E. Brandes, W. Möller: Safety-related parameters - Volume 1: Flammable liquids and gases , Wirtschaftsverlag NW - Verlag für neue Wissenschaft GmbH, Bremerhaven 2003.
8. ↑ Entry in the Maximum Residue Quantity Ordinance
9. ↑ data sheet at Springer

Web links

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