Agent Name

Hafnium tetrafluoride

CAS Number

13709-52-9

Formula

F4-Hf

Major Category

Metals

Synonyms

Hafnium (IV) fluoride; [Alfa Aesar MSDS]

Category

Metals, Inorganic Compounds

Description

White powder; [Alfa Aesar MSDS]

Comments

Causes burns; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; Toxic by ingestion, inhalation, and skin absorption; [Alfa Aesar MSDS] See "Hafnium." See "Zirconium fluoride."

Exposure Assessment
BEI

Fluorides in urine = 2 mg/L prior to shift or 3 mg/L at end of shift; (Repeated measurements recommended.)

TLV (ACGIH)

0.5 mg/m3, as Hf (2.5 mg/m3, as F)

PEL (OSHA)

0.5 mg/m3, as Hf (2.5 mg/m3, as F)

MAK

1 mg/m3, inhalable fraction, as F

IDLH (NIOSH)

50 mg/m3, as Hf

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
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