Agent Name

Tritium

CAS Number

10028-17-8

Formula

T2

Major Category

Physical/Radiation

Synonyms

Hydrogen-3; T; Triterium; [ChemIDplus]

Category

Radionuclides

Description

Tritium comprises a billionth of a billionth percent of natural hydrogen; it is found as tritium gas (HT) and tritiated water (HTO). [Argonne]

Sources/Uses

Used to boost fission or fusion in nuclear weapons; Also used in tracers for biological and environmental studies and in luminous paints for exit signs, airport runways, and watch dials; [Argonne]

Comments

Source: Cosmic rays interacting with air molecules; Nuclear fission with a yield of about 0.01%; Neutron absorption of lithium-6 atoms; [Argonne] Half-Life: 12 years Effective Half-Life: 12 days Specific Activity: 9,800 Ci/gm Decay Mode: Beta GI Absorption: Completely absorbed; Critical Organ: Total body Internal Toxicity: Low Annual Limit on Intake: 80 mCi Radiation Energy (MeV): Beta 0.0186 (100%) Radiation Accidents: 2 accidents with 7 people exposed and 2 deaths; [See Glossary for references.] See "Radiation, ionizing."

Restricted

EPA has set the maximum contaminant level in drinking water at 20,000 pCi/L. Surface waters usually contain about 10-20 pCi/L. [Argonne]

Reference Link

Tritium | Radiation Protection | US EPA

Adverse Effects
Other Poison

Simple Asphyxiant

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Biomedical References

Search PubMed

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent: