Titanium hydride

  • Titanium dihydride
  • Titanium(II) hydride
Formula
TiH2
Structure
Description
A white to light colored solid.
Uses
Additive in powder metallurgy.

Registry Numbers and Inventories.
CAS
7704-98-5
EC (EINECS/ELINCS)
231-726-8
EC Class
highly flammable
S 7/8 43.3
RTECS
XR2130000
RTECS class
Other
UN (DOT)
1871
Merck
12,9613
Beilstein/Gmelin
71694 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
H2Ti
Formula mass
49.92
Decomposition point, °C
~450
Density
3.91 g/cm3
Solubility in water
Reacts

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. Water free area.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Do not allow water to get into the container because of violent reaction. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Do not allow contact with water. Keep from contact with moist air and steam.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. Do not expose spill to water.
Disposal code
26
Stability
Stable under normal temperatures and pressures. Combines vigorously or explosively with water.
Incompatibilities
Acids, moisture, water.
Decomposition
Irritating and toxic fumes and gases, titanium/titanium oxides.

Fire.
Flash Point,°C
>400
Autoignition, °C
400
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Water Reactive. Material will react with water and may release a flammable and/or toxic gas. May ignite or explode on contact with steam or moist air. Extinguishing media: Use dry sand or earth to smother fire. Do NOT use water directly on fire. Use agent most appropriate to extinguish fire. DO NOT USE WATER! Contact professional fire-fighters immediately.
Hazards
May react violently or explosively on contact with water. Some are transported in flammable liquids. May be ignited by friction, heat, sparks or flames. Some of these materials will burn with intense heat. Dusts or fumes may form explosive mixtures in air. Containers may explode when heated. May re-ignite after fire is extinguished.
Health
1
 
Flammability
1
 
 
Reactivity
2
 

Health.
Exposure effects
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
   Skin
Get medical aid. Wash clothing before reuse. If water-reactive products are embedded in the skin, no water should be applied. The embedded products should be covered with a light oil.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. Get medical aid immediately.

Transport.
UN number
1871
Response guide
Hazard class
4.1
Packing Group
II
 
HS Code
2850 00 20
 
Std. Transport #
4917441