Yttrium
[CAS# 7440-65-5]

Identification

• Classification: Inorganic chemical industry >> Simple substance
• Name: Yttrium
• Molecular Formula: Y
• Molecular Weight: 88.91
• CAS Registry Number: 7440-65-5
• EC Number: 231-174-8

Properties

• Density: 4.84 g/cm³ (18 ºC)^*
• Melting point: 1477 ºC^**

^* Meyer, R. J.; Zeitschrift fuer Anorganische Chemie 1913, V80, P7-35.

^** McKinley, John D.; Journal of Chemical Physics 1964, V41(9), P2814-17.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable solids	Flam. Sol.	2	H228
Pyrophoric solids	Pyr. Sol.	1	H250
Acute toxicity	Acute Tox.	4	H302
Acute toxicity	Acute Tox.	4	H332
Acute toxicity	Acute Tox.	4	H312
Flammable solids	Flam. Sol.	1	H228
Chronic hazardous to the aquatic environment	Aquatic Chronic	4	H413
Specific target organ toxicity - single exposure	STOT SE	2	H371