NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Indium

CAS
7440-74-6

In

RTECS
NL1050000
Synonyms & Trade Names

Indium metal
DOT ID & Guide

Exposure
Limits

NIOSH REL*: TWA 0.1 mg/m3 [*Note: The REL also applies to other indium compounds (as In).]
OSHA PEL: none
IDLH
N.D. See: IDLH INDEX
Conversion
Physical Description
Ductile, shiny, silver-white metal that is softer than lead.
MW: 114.8
BP: 3767°F
MLT: 314°F
Sol: Insoluble
VP: 0 mmHg (approx)
IP: NA

Sp.Gr: 7.31
Fl.P: NA
UEL: NA
LEL: NA

Noncombustible Solid in bulk form, but may ignite in powdered or dust form.
Incompatibilities & Reactivities

(Dinitrogen tetraoxide + acetonitrile), mercury(II) bromide (at 662°F), sulfur (mixtures ignite when heated) [Note: oxidizes readily at higher temperatures.]
Measurement Methods
NIOSH 7303, P&CAM173 (II-5); OSHA ID121
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
Skin: No recommendation
Eyes: No recommendation
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation

First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations
Not available.
Important additional information about respirator selection
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
Irritation eyes, skin, respiratory system; possible liver, kidney, heart, blood effects; pulmonary edema
Target Organs
Eyes, skin, respiratory system, liver, kidneys, heart, blood
See also: INTRODUCTION   See ICSC CARD: 1293