Ytterbium

Modify Date: 2025-08-21 15:24:26

Ytterbium Structure
Ytterbium structure
Common Name Ytterbium
CAS Number 7440-64-4 Molecular Weight 173.040
Density 6.54 g/mL at 25 °C(lit.) Boiling Point 1196 °C(lit.)
Molecular Formula Yb Melting Point 824 °C(lit.)
MSDS Chinese USA Flash Point N/A
Symbol GHS02 GHS07
GHS02, GHS07
Signal Word Danger

 Names

Name ytterbium
Synonym More Synonyms

 Chemical & Physical Properties

Density 6.54 g/mL at 25 °C(lit.)
Boiling Point 1196 °C(lit.)
Melting Point 824 °C(lit.)
Molecular Formula Yb
Molecular Weight 173.040
Exact Mass 173.938904
Storage condition Flammables area

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
ZG1925000
CHEMICAL NAME :
Ytterbium
CAS REGISTRY NUMBER :
7440-64-4
LAST UPDATED :
199701
DATA ITEMS CITED :
2
MOLECULAR FORMULA :
Yb
MOLECULAR WEIGHT :
173.04
WISWESSER LINE NOTATION :
YB

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Implant
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
25 gm/kg
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Tumorigenic - tumors at site of application
REFERENCE :
PSEBAA Proceedings of the Society for Experimental Biology and Medicine. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1903/04- Volume(issue)/page/year: 135,426,1970

 Safety Information

Symbol GHS02 GHS07
GHS02, GHS07
Signal Word Danger
Hazard Statements H228-H302 + H312 + H332-H315-H319-H335
Precautionary Statements P210-P261-P280-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes F:Highlyflammable;
Risk Phrases R36/37/38
Safety Phrases S36-S33-S16-S26
RIDADR UN 3089 4.1/PG 2
WGK Germany 3
RTECS ZG1925000
Packaging Group I
Hazard Class 4.2

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 Synonyms

Ytterbium
yterbio
Yb
EINECS 231-173-2
MFCD00011286
Ytterbium (Ii) Ion
Ytterbium atomic absorption standard solution
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