DEUTERIUM HYDRIDE Property

Melting point:

−259.2 °C(lit.)

Boiling point:

−252.8 °C(lit.)

vapor density 

0.07 (21 °C, vs air)

form 

gas

color 

colorless

Safety

Hazard Codes 

F+

Risk Statements 

12

Safety Statements 

16-33-36-38-9

RIDADR 

UN 1049 2.1

WGK Germany 

3

Autoignition Temperature

1060 °F

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H220Extremely flammable gas

H280Contains gas under pressure; may explode if heated

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P377Leaking gas fire: Do not extinguish, unless leak can be stopped safely.

P381Eliminate all ignition sources if safe to do so.

P410+P403Protect from sunlight. Store in a well-ventilated place.

DEUTERIUM HYDRIDE Chemical Properties,Usage,Production

Chemical Properties

col gas [CRC10]Density, g/L: 0.123 [CRC10]

Definition

ChEBI: Deuterium atom is the stable isotope of hydrogen with relative atomic mass 2.014102 and a natural abundance of 0.0115 atom percent (from Greek deltaepsilonupsilontauepsilonrhoomicronnu, second). It contains a deuteron.

Synthesis

About 150 ml. of n-butyl ether, dried over Na, is distilled into the reaction flask and 5.75 g. of LiAlH4 (40% excess) is then added under a nitrogen blanket. The mixture is frozen with liquid N s. The apparatus is then evacuated, and the flask contents are brought to boiling by careful heating. After 1.5 hours, it is again cooled with liquid Ns , the evacuation is repeated, and 5 ml. of 99.5% D2O is added to the solidified mixture, using a hypodermic syringe to pierce the rubber cap. Because of the low reaction temperature, the flask becomes coated with ice on the outside. By repeated immersion in liquid N3, the temperature is controlled so that the ice on the outer wall of the flask does not melt. As soon as the reaction subsides somewhat, two additional portions of 6.5 ml. of DSO each are added (for a total of 18 ml. or 150% excess). The yield is 10 liters of HD. The purity is 97-99%.
LiAlH₄ + 4D₂O = LiOD + Al(OD)₃ + 4HD