Deuterium

  • Heavy hydrogen
Formula
[2H]2
Structure
Description
Deuterium is an isotope of hydrogen but it is chemically identical. It is a colorless, odorless gas.
Uses
Extensively in small amt as tracer in establishment of rates and kinetics of chemical reactions.

Registry Numbers and Inventories.
CAS
7782-39-0
EC (EINECS/ELINCS)
231-952-7
UN (DOT)
1957
Merck
12,2983
Beilstein/Gmelin
18 (G)
Canada DSL/NDSL
DSL
US TSCA
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
(2)H2
Formula mass
4.02
Melting point, °C
-254.43
Boiling point, °C
-249.6
Vapor density (air=1)
0.07
Critical temperature
-234.75
Critical pressure
16.432
Density
0.169 g/cm3 (-253 C)
Heat of vaporization
12.3 kJ/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.
Stability
No data.
Incompatibilities
Reacts readily with oxidizing agents.

Fire.
Upper exp. limit, %
75
Lower exp. limit, %
5
Fire fighting
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Fire potential
EXTREMELY FLAMMABLE.
Hazards
Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Containers may explode when heated. Ruptured cylinders may rocket.
Health
0
 
Flammability
4
 
 
Reactivity
0
 

Health.
Exposure effects
Rapid breathing and rapid heart rate are common. In severe cases abnormally low blood pressure, apnea, and cardiac arrest develop. Various disturbances including headache, dizziness, mood disturbances, numbness of the extremities, sleepiness, mental confusion, poor judgement and coordination, and memory loss may occur. Prolonged or severe hypoxia results in unconsciousness. Prolonged asphyxia may produce CNS injury. Hemiparesis has been reported with volatile substance abuse. Cerebral edema with brainstem herniation may occur. Seizures have been reported following intentional inhalation.
   Ingestion
Nausea, vomiting, and gastrointestinal hemorrhage may develop.
   Inhalation
Hyperventilation may develop.
   Skin
Dermal exposure may cause frostbite injury. Severe tissue burns have been reported.
   Eyes
Decreases in night vision, visual acuity, and visual fields (tunnel vision) may occur. Frothy mucous may be seen.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Administer 100% humidified supplemental oxygen with assisted ventilation as required. If hypoxia has been severe or prolonged, carefully evaluate for neurologic sequelae and provide supportive treatment as indicated.
   Skin
Rewarming and a variety of topical treatments are indicated for frostbite injury. See main section for more information.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
1957
Response guide
Hazard class
2.1
Std. Transport #
4905771