Magnesium granules, coated

Formula
Mg
Structure
Description
Odorless silvery solid.
Uses
Constituent of light alloys, manufacture precision instruments, optical mirrors, in pyrotechnics, for flash bulbs & flares, alumino thermics, ignition of thermite mixt, intense light signals, for grignard reagents, in recovery of titanium.

Registry Numbers and Inventories.
CAS
7439-95-4
EC (EINECS/ELINCS)
231-104-6
EC Index Number
012-001-00-3
EC Class
Highly flammable
R 11 15
S 7/8 43
RTECS
OM3850000
UN (DOT)
2950
Merck
13,5675
Beilstein/Gmelin
16207 (G)
Beilstein Reference
N/A
Swiss Giftliste 1
G-9574
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
Mg
Formula mass
24.31
Melting point, °C
651
Boiling point, °C
1107
Vapor pressure, mmHg
0.00822 torr (432 C)
Vapor density (air=1)
N/P
Odor Threshold Odor threshold Odorless
Density
1.74 g/cm3
Solubility in water
Reacts
Thermal expansion
0.0000286 per C
Heat of fusion
5.90 kJ/mol
Heat of combustion
-668 kJ/mol

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a tightly closed container. 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. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear chemical goggles and face shield. Skin: Wear impervious gloves. 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
Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxygen, moisture, chlorinated solvents, methanol, hydrogen peroxide, oxidizing agents, sulfur compounds, metal oxides, metal cyanides, metal oxide salts, fluorine, carbonates, halogens, phosphates.
Decomposition
Oxides of magnesium.

Fire.
Flash Point,°C
500
Autoignition, °C
472
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Flammable solid. May react with acids or moisture to form explosive hydrogen gas. Extinguishing media: Use only graphite powder, soda ash, powdered sodium chloride, or an appropriate metal-fire-extinguishing dry powder. Do NOT use water, carbon dioxide, or foam.
Fire potential
Flammable_combustion requires preheating. Moderate hazard.
Hazards
Forms dense white smoke. Flame is very bright.
Combustion products
Dangerous; when heated, burns rapidly in air and emits fumes...
Health
0
 
Flammability
1
 
 
Reactivity
1
 

Health.
Poison_Class
4
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
May cause irritation of the digestive tract. Low hazard for usual industrial handling.
   Inhalation
May cause respiratory tract irritation. Inhalation of fumes may cause metal fume fever, which is characterized by flu-like symptoms with metallic taste, fever, chills, cough, weakness, chest pain, muscle pain and increased white blood cell count.
   Skin
Dust may cause mechanical irritation. Particles embedded in the skin may cause chemical gas gangrene with symptoms of persistent lesions, inflammation and gas bubbles under the skin.
   Eyes
Dust may cause mechanical irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   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
2950
Response guide
Hazard class
4.1
USCG CHRIS Code
MGX
 
HS Code
8104 90 00
 
Std. Transport #
4916443