Hydrogen selenide
[CAS# 7783-07-5]

Identification

• Name: Hydrogen selenide
• Synonyms: Dihydrogen monoselenide; Dihydrogen selenide; Hydrogen selenide; NSC 605850; NSC 605851; NSC 605852; Selane; Selenium dihydride; Selenium hydride; Selenium hydride (SeH2)
• Molecular Formula: H₂Se
• Molecular Weight: 80.98
• CAS Registry Number: 7783-07-5
• EC Number: 231-978-9

Properties

• Density: 2.12000122070312 g/cm^3*
• Melting point: 381-383 ºC^**
• Boiling point: 137.5 ºC^***

^* de Forcrand, R.; Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences 1902, V134, P171.

^** Perkins, Melvin A.; US 2059646 1936.

^*** Vitvitskii, A. I.; Russian Journal of Applied Chemistry 2009, V82(3), P505-508.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable gases	Flam. Gas	1	H220
Gases under pressure (liquid)	Press. Gas (Liq.)		H280
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410
Acute toxicity	Acute Tox.	2	H330
Eye irritation	Eye Irrit.	2	H319
Specific target organ toxicity - single exposure	STOT SE	1	H370
Skin irritation	Skin Irrit.	2	H315
Specific target organ toxicity - repeated exposure	STOT RE	1	H372
Gases under pressure (compressed)	Press. Gas (Comp.)		H280
Acute toxicity	Acute Tox.	1	H330

• Hazardous Chemical?: Yes