Magnesium chloride

  • Magnogene
  • Magnesium chloride solution
Formula
MgCl2
Structure
Description
Thin white to gray opaque granules or flakes.
Uses
Source of magnesium metal, chemical intermediate for magnesium oxychloride for cement, catalyst, flocculating agent, agent in fire extinguishers, agent in textile & paper mfr, component for ceramics, fireproofing agent for wood, component of refrigerating brines.

Registry Numbers and Inventories.
CAS
7786-30-3
EC (EINECS/ELINCS)
232-094-6
R 36/37/38
RTECS
OM2800000
RTECS class
Agricultural Chemical and Pesticide; Mutagen
UN (DOT)
1459
Merck
13,5684
Beilstein/Gmelin
9305 (G)
EPA OPP
13902
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
Cl2Mg
Formula mass
95.21
Melting point, °C
715
Boiling point, °C
1412
Vapor pressure, mmHg
25 (1000 C)
Density
2.32 g/cm3
Solubility in water
1670 g/L
Dielectric constant
2.98
Thermal expansion
7.4E-5/K (10 C)
Heat of fusion
33.9 kJ/mol
Heat of vaporization
136.8 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed in a cool place in a tightly closed container.
Handling
Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed.
Protection
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Wear resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Respirators
If workplace exposure limit(s) of product or any component is exceeded (see exposure guidelines), a NIOSH/MSHA approved air supplied respirator is advised in absence of proper environmental control. OSHA regulations also permit other NIOSH/MSHA respirators (negative pressure type) under specified conditions.
Small spills/leaks
Small spill - Sweep up material for disposal or recovery. Large Spill - Shovel material into containers. Thoroughly sweep area of spill to clean up any residual material.
Stability
Stable.
Incompatibilities
Metals, strong oxidizing agents.
Decomposition
When heated to decomposition, emits toxic fumes of hydrogen chloride.

Fire.
Fire fighting
Wear a self-contained breathing apparatus with a full facepiece operated in the positive pressure demand mode with appropriate turn-out gear and chemical resistant personal protective equipment. Extinguish using media most appropriate for surrounding fire.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
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
Swallowing small amounts of this material during normal handling is not likely to cause harmful effects. Swallowing large amounts may be harmful.
   Inhalation
This material is a dust or may produce dust. Breathing small amounts of this material during normal handling is not likely to cause harmful effects. Breathing large amounts may be harmful.
   Skin
Can cause skin irritation. Symptoms may include redness and burning of skin, and other skin damage.
   Eyes
Can cause eye irritation. Symptoms include stinging, tearing, redness, and swelling of eyes.

First aid
 
   Ingestion
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
   Inhalation
Inhalation: If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
   Skin
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
   Eyes
If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Transport.
UN number
1459
Response guide
USCG CHRIS Code
MGL (solution)
 
IMO Chemical Code
18
IMO Pollution Category
III