PYRIDINE-BORANE
COMPLEX
|
PRODUCT
IDENTIFICATION
|
CAS
NO. |
110-51-0
|
![PYRIDINE-BORANE](110-51-0.gif)
|
EINECS
NO. |
203-809-9
|
FORMULA |
C5H5NBH3
|
MOL
WT. |
92.93 |
H.S.
CODE |
|
TOXICITY
|
|
SYNONYMS |
Trihydro(pyridine)
Boron; PyB; Pyridineborane;
|
Borane-Pyridine Complex; Pyridin-Boran (German);
Piridina--borano (Spanish); Pyridine--borane
(French); |
SMILES
|
|
CLASSIFICATION
|
|
PHYSICAL
AND CHEMICAL PROPERTIES
|
PHYSICAL
STATE |
Clear
to amber liquid
|
MELTING
POINT |
10
- 11 C |
BOILING
POINT |
Decomposes
|
SPECIFIC
GRAVITY |
0.92
|
SOLUBILITY
IN WATER |
|
pH |
|
VAPOR
DENSITY |
|
AUTOIGNITION
|
|
NFPA
RATINGS |
Health:
3; Flammability: 3; Reactivity: 2 |
REFRACTIVE
INDEX
|
1.530
- 1.532
|
FLASH
POINT |
21
C
|
STABILITY |
Unstable
above 54 C. Moisture sensitive. |
GENERAL
DESCRIPTION AND APPLICATIONS
|
Borane (boron hydride): any binary compound of boron and hydrogen. The
term borane describe sometimes denote substances considered to be derivatives of
the boron-hydrogen compounds, such as BCl3 and B10H12I2. Borane can be made from
magnesium boride (MgB2) with the action of acid or can be prepared by the
breaking apart of complex molecules into simpler products on heating in the
presence of hydrogen. Boranes form interesting structures which cannot be
described by the conventional two-electron covalent bond model. There are fewer
electrons forming the chemical bonds than required in normal electron-pair
bonds. An electron pair bonds both boron and the bridging hydrogen atom to
create three atoms bond. There are two major general formula system;
BnHn+4
(nidoboranes) and BnHn+6
(arachnoboranes).
The simplest is diborane (B2H6),
highly reactive gas; used as a rocket fuel and in hydroboration process to prepare
organoboranes which have application as intermediates for organic synthesis.
Boranes are all reactive and oxidize readily in air. There is a wide range of
boranes with shapes ranging from delicate spiders' webs to untidy birds' nests.
There is also a wide range of borane derivatives containing other atoms, such as
carbon and phosphorus. Carborane is a class of stable cluster compounds
containing carbon, boron and hydrogen external to the framework of the cluster;
with general formula C2BnHn+2. Carborane bonds are non-classical but have
thermal stability and neutron capture ability, when containing the 10B isotope.
A cluster compound is one with insufficient electrons to allow for classical
two-center two-electron bonds between all adjacent atoms. Boranes including
borane (BH3), borobutane (B4H10), and borodecane (B10H14) are used as fuels for
air breathing engines and rockets as thery have higher calorific values than
hydroborons fuels, once proposed as high-energy fuels for aircraft and missiles.
Boranes are used in the synthesis of other organic boron compounds and metal
borohydrides. They are used as chemo- or stereo-selective reductants. They
convert aldehydes (chemoselective), ketones (stereoselective) to the
corresponding alcohols in the manufacture of pharmaceuticals and other fine
chemicals. They are used in the reductive alkylation of amines, novel metals and
oximes. They are used as polymerization initiators (especially Trialkylboranes)
for many monomers. They are used in extracting metals (Ag, Pd, Au, Ni).
Applications include metal coatings, fogging agents in photographic
emulsions, polymer additives and nitride-boron coatings. |
SALES
SPECIFICATION |
APPEARANCE
|
Clear
to amber liquid
|
CONTENT |
95.0%
min
|
TRANSPORTATION |
PACKING |
170kgs
in drum |
HAZARD
CLASS |
3
(Packing Group: II) |
UN
NO. |
3287 |
OTHER
INFORMATION |
Hazard Symbols: F T, Risk Phrases: 10-15-20-24/25-36/38,
Safety Phrases: 26-36/37-43-45 |
|