Magnesium perchlorate

  • Anhydrone
  • Dehydrite
Formula
Mg(ClO4)2
Structure
Description
A white crystalline solid.
Uses
As regenerable drying agent for gases.

Registry Numbers and Inventories.
CAS
10034-81-8
EC (EINECS/ELINCS)
233-108-3
RTECS
SC8925000
RTECS class
Other
UN (DOT)
1475
Merck
12,5715
Beilstein/Gmelin
23306 (G)
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
Cl2MgO8
Formula mass
223.20
Melting point, °C
251
Decomposition point, °C
>250
Vapor density (air=1)
7.7
Density
2.21 g/cm3
Solubility in water
990 g/L

Hazards and Protection.
Storage
Do not store near combustible materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid contact with clothing and other combustible materials. 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
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Substance may form explosive compound with: strong mineral acids, ammonia, butyl fluoride, dimethyl sulfoxide, ethylene oxide, hydrocarbons, organic matter, phosphorus, and trimethyl phosphite. Reacts violently with ethanol forming ethyl perchlorate.
Decomposition
Hydrogen chloride, oxides of magnesium.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. Combustion generates toxic fumes. Oxidizer. Greatly increases the burning rate of combustible materials. Extinguishing media: Use water only! Do NOT use carbon dioxide or dry chemical.
Fire potential
Powerful oxidizing material; mixtures with combustible organic or other easily oxidizable materials. Are ignited readily by friction or heat.
Hazards
Can form explosive mixture with combustible material or finely powdered metals. Increases the intensity of fires.
Combustion products
Liberates toxic gases when involved in fire.
Health
1
 
Flammability
0
 
 
Reactivity
0
 
 
Special
O

Health.
Exposure effects
Blood pressure may be decreased. Pulse may be irregular. Lethargy, hyporeflexia, weakness, and subjective feeling of thirst and heat may occur. Excessive absorption of magnesium from cathartics may result in CNS depression and seizures, most notably in renal failure patients.
   Ingestion
May cause irritation of the digestive tract. May cause methemoglobinemia, cyanosis, convulsions, and death. Methemoglobinemia is characterized by dizziness, drowsiness, headache, breath shortness, cyanosis with bluish skin, rapid heart rate and chocolate-brown colored blood. May cause central nervous system depression.
   Inhalation
Dust is irritating to the respiratory tract. May cause effects similar to those described for ingestion.
   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. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Immediately 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
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
1475
Response guide
Hazard class
5.1
Packing Group
II
 
USCG CHRIS Code
MPC
 
Std. Transport #
4918729