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1304-54-7

1304-54-7 Structure

1304-54-7 Structure
IdentificationBack Directory
[Name]

triberyllium nitride
[CAS]

1304-54-7
[Synonyms]

beryllium nitride
triberyllium nitride
[EINECS(EC#)]

215-132-6
[Molecular Formula]

Be3N2
[MDL Number]

MFCD00799849
[MOL File]

1304-54-7.mol
[Molecular Weight]

55.0499
Chemical PropertiesBack Directory
[Appearance]

Hard, refractory, white crystals. Readily attached by strong alkali solutions, liberating ammonia.
[Melting point ]

2200 ±40°
[Boiling point ]

volatile [MER06]
[density ]

2.710
[solubility ]

reacts with acid solutions, alkaline solutions
[form ]

gray refractory crystals
[color ]

gray refractory crystals, crystalline; cubic
[Water Solubility ]

decomposes slowly in H2O, quickly in acids and alkalies to evolve NH3 [MER06]
[Crystal Structure]

Cubic
[Uses]

Atomic energy, production of the radioactive carbon isotope1 4C for tracer uses.
[EPA Substance Registry System]

Beryllium nitride (Be3N2) (1304-54-7)
Hazard InformationBack Directory
[Chemical Properties]

Hard, refractory, white crystals. Readily attached by strong alkali solutions, liberating ammonia.
[Description]

Beryllium nitride has the molecular formula of Be3N2 and the molecular weight of 55.0652 g/mol. It can be prepared from the elements at high temperature (1100– 1500 °C). Be3N2 decomposes in vacuum into beryllium and nitrogen:
3Be +N2 Be3N2
It is a white to yellow powder with a density of 2.71 g/cm3. Its melting point is 2208 °C and a boiling point of 2240 °C. Its CAS number is 1304-54-7. It is soluble in water and is readily hydrolyzed forming beryllium hydroxide and ammonia:
Be3N2 + 3H203Be(OH)2 + 2NH3
It has two polymorphic forms: cubic a-Be3N2 with a defect anti-bixbyite structure (a = 8.1452 ), and hexagonal β-Be3N2.

[Physical properties]

Gray cubic crystal; hard and refractory; density 2.71 g/cm3; melts at 2,200°C; decomposes in acid or alkali; slowly reacts with water.
[Preparation]

Beryllium nitride may be prepared by heating beryllium metal powder with dry nitrogen in an oxygen-free atmosphere above 700°C.
3Be + N2→Be3N2
[Hazard]

Chronic inhalation of the powder can cause cancer and adverse reproductive effects.
Safety DataBack Directory
[RIDADR ]

1566
[HazardClass ]

6.1(b)
[PackingGroup ]

III
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