|
n-BUTYRALDEHYDE | ||
|
PRODUCT IDENTIFICATION |
||
| CAS NO. |
123-72-8 |
|
| EINECS NO. | 204-646-6 | |
| FORMULA |
CH3(CH2)2CHO | |
| MOL WT. | 72.11 | |
| H.S. CODE | 2912.13 | |
|
TOXICITY |
Oral rat LD50: 2490 mg/kg | |
| SYNONYMS | Butanal; Butal; Butyl Aldehyde; Butyric Aldehyde; | |
| Butyric Aldehyde; butaldehyde; butalyde; n-butanal; Aldehyde Butyrique (French); Aldeide Butirrica (Italian); Butyraldehyd (German); Butyraldehyde (Czech); | ||
|
SMILES |
|
|
|
CLASSIFICATION |
|
|
|
PHYSICAL AND CHEMICAL PROPERTIES |
||
| PHYSICAL STATE | Clear liquid | |
| MELTING POINT | -99 C | |
| BOILING POINT |
75 C | |
| SPECIFIC GRAVITY | 0.803 | |
| SOLUBILITY IN WATER | Insoluble | |
| pH | ||
| VAPOR DENSITY | 2.5 | |
| AUTOIGNITION |
230 C | |
| NFPA RATINGS | Health: 3 Flammability: 3 Reactivity: 2 | |
| REFRACTIVE INDEX |
1.3790 | |
| FLASH POINT | -7 C | |
| STABILITY | readily oxidizes on prolonged exposure to air to form explosive peroxides | |
|
DESCRIPTION AND APPLICATIONS |
||
|
n-Butyraldehyde is used as an intermediate in the manufacturing plasticizers, alcohols, solvents and polymers (such as 2-Ethylhexanol, n-butanol, trimethylolpropane, n-butyric acid, polyvinyl butyral, methyl amyl ketone). It is also used as an intermediate to make pharmaceuticals, agrochemicals, antioxidants, rubber accelerators, textile auxiliaries, perfumery and flavors. |
||
| SALES SPECIFICATION | ||
|
APPEARANCE |
clear liquid | |
|
ASSAY |
99.0% min | |
|
ACIDITY |
0.5% max | |
|
WATER |
0.5% max | |
| COLOR |
20 max (Pt/Co scale) | |
| TRANSPORTATION | ||
| PACKING | Only in bulk | |
| HAZARD CLASS | 3 (Packing group: II) | |
| UN NO. | 1129 | |
| OTHER INFORMATION | ||
|
n-Butyraldehyde
is an extremely flammable liquid OR vapor. |
||
| DESCRIPTION OF ALDEHYDE | ||
|
Aldehydes
are organic compounds containing -CHO radical, in
which a carbon atom forms a solid bond with an
oxygen atom and is also bonded to a hydrogen atom
and another group denoted by R, which can be a second
hydrogen atom, an alkyl group, or an aryl group.
The most important and the simplest examples are
methanal (formaldehyde), HCOH, and ethanal (acetaldehyde),
CH3CHO.( In systematic chemical nomenclature,
aldehyde names end with the suffix -al). Formaldehyde
is used to make synthetic resins by reaction with
phenols, urea, and melamine, as a chemical intermediate,
as an embalming fluid, and as a disinfectant. Acetaldehyde
is used chiefly to manufacture acetic acid. They
are unpleasant-smelling liquids widely used in the
chemical industry, whereas aromatic aldehydes frequently
have pleasant smells and are used widely as flavourings
and perfumes. An example is benzaldehyde (benzenecarbaldehyde,
C6H5CHO), a derivative of
benzene with an aldehyde group attached to the ring.
It is a colourless oil smelling of almonds offer
applications to both in perfumes and flavourings.
Aldehydes are formed by oxidation of primary alcohols;
further oxidation yields carboxylic acids. Aldehydes
have certain characteristic addition and condensation
reactions. Aldehydes can be reduced to primary alcohols
(ketones to secondary alcohols). Aldehydes form
cyanohydrins with hydrogen cyanide, acetals with
alcohol, yellow-orange solid derivatives with DNP
( 2,4-dinitrophenylhydrazones) and undergo condensation
reactions to yield oximes (compounds containing
the group C:NOH), hydrazones (organic compounds
containing the group =C:NNH2), and semicarbazones
(organic compounds containing the unsaturated group
=C:N.NH.CO.NH2). Aldehydes readily polymerize.
|
||
