Magnesium nitrate hexahydrate

Formula
Mg(NO3)2.6H2O
Structure
Description
White crystalline powder

Registry Numbers and Inventories.
CAS
13446-18-9
EC (EINECS/ELINCS)
233-826-7
EC Class
oxidizing
S 17 24/25
RTECS
OM3756000
RTECS class
Primary Irritant
UN (DOT)
1474
Merck
13,5697
Beilstein/Gmelin
72339 (G)
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
MgN2O6 . 6H2O
Formula mass
256.41
Melting point, °C
89
Vapor density (air=1)
WATER VAP
Odor Threshold Odor threshold Odorless
Density
1.464 g/cm3 (60 C)
Solubility in water
1250 g/L
Heat of fusion
38.54 kJ/mol

Hazards and Protection.
Storage
Do not store near combustible materials. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid contact with clothing and other combustible materials. Avoid ingestion and inhalation.
Protection
Wear appropriate protective gloves, clothing and goggles.
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
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.
Disposal code
14
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizers and reducing agents. Substance undergoes violent decomposition when in contact with dimethyl formamide.
Decomposition
Nitrogen oxides, oxides of magnesium.

Fire.
Fire fighting
Small Fires: Use water. Do not use dry chemicals or foams. carbon dioxide or Halon may provide limited control. Large Fires: Flood fire area with water from a distance.
Fire potential
These substances will accelerate burning when involved in a fire.
Hazards
May explode from heat or contamination. May react explosively with hydrocarbons (fuels). May ignite combustibles.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
0
 
 
Reactivity
0
 
 
Special
O

Health.
Exposure effects
Repeated exposure may cause kidney damage and digestive tract abnormalities.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause methemoglobinemia, cyanosis, convulsions, and death. Excessive amounts of magnesium may cause central nervous system depression, respiratory paralysis, and cardiac arrest.
   Inhalation
Dust is irritating to the respiratory tract. May cause methemoglobinemia, cyanosis, convulsions, tachycardia, dyspnea, and death. May cause effects similar to those described for ingestion.
   Skin
May cause moderate skin irritation.
   Eyes
May cause moderate 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 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. Wash clothing before reuse.
   Eyes
In case of contact with substance, immediately flush with running water for at least 20 minutes.

Transport.
UN number
1474
Response guide
Hazard class
5.1
Packing Group
III
 
USCG CHRIS Code
MGN
 
HS Code
2834 29 80