Potassium perchlorate

Formula
ClKO4
Structure
Description
A white crystalline solid.
Uses
In explosives, pyrotechnics & photography, in analytical chemistry.

Registry Numbers and Inventories.
CAS
7778-74-7
EC (EINECS/ELINCS)
231-912-9
EC Index Number
017-008-00-5
EC Class
Oxidising; Harmful
S 13 22 27
RTECS
SC9700000
RTECS class
Reproductive Effector
UN (DOT)
1489
Merck
12,7822
Beilstein/Gmelin
15173 (G)
Swiss Giftliste 1
G-2316
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
ClKO4
Formula mass
138.54
Melting point, °C
608
Decomposition point, °C
400
Vapor density (air=1)
4.8
Density
2.5239 g/cm3 (10.7 C)
Solubility in water
18 g/L
Thermal expansion
0.00011/K

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Do not store near combustible materials. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
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 generating dusty conditions.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Aluminum + aluminum fluoride, aluminum + barium nitrate + potassium nitrate, aluminum powder + titanium dioxide, barium chromate + tungsten and/or titanium, boron + magnesium + silicon rubber, combustible materials, ethanol, ferrocenium diamminetetrakis (thiocyanato-N) chromate(1-), lavtose, metal powders, potassium hexacyanocobaltate, reductants, sulfur, titanium hydride.
Decomposition
Hydrogen chloride, oxides of potassium, oxides of chlorine.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Oxidizer. Greatly increases the burning rate of combustible materials. Extinguishing media: Use water spray to cool fire-exposed containers. For large fires, use water spray or fog. For small fires, use dry chemical, carbon dioxide, halon, or water spray.
Fire potential
These substances will accelerate burning when involved in a fire.
Hazards
These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.
Combustion products
Liberates toxic gases when involved in fire.
Health
1
 
Flammability
0
 
 
Reactivity
1
 
 
Special
O

Health.
Poison_Class
3
Exposure effects
Prolonged or repeated skin contact may cause dermatitis. May cause anemia and other blood cell abnormalities.
   Ingestion
May cause irritation of the digestive tract. May cause kidney damage. In higher doses as an antithyroid agent, it has been associated with gastric irritation, nausea, vomiting, fever, skin rashes, lymphadenopathy, nephrotic syndrome, and rarely leukpopenia, agranulocytosis, pancytopenia, and fatal aplastic anemia.
   Inhalation
Causes respiratory tract irritation.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
1489
Response guide
Hazard class
5.1
Packing Group
II
 
Std. Transport #
4918340