Calcium nitrate

  • Lime nitrate
  • Calcium nitrate tetrahydrate
Formula
Ca(NO3)2
Structure
Description
White to light gray granular solid. May be either the anhydrous compound or the tetrahydrate.
Uses
In explosives, fertilizers, matches, pyrotechnics, manufacture of incandescent mantles, radio tubes, nitric acid, corrosion inhibitor in diesel fuels.

Registry Numbers and Inventories.
CAS
10124-37-5
EC (EINECS/ELINCS)
233-332-1
RTECS
EW2985000
RTECS class
Other
UN (DOT)
1454
Merck
12,1729
Beilstein/Gmelin
6516 (G)
Swiss Giftliste 1
G-5310
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
CaN2O6
Formula mass
164.09
Melting point, °C
562
Decomposition point, °C
675 - 683
Vapor density (air=1)
8.1
Odor Threshold Odor threshold Odorless
Density
2.50 g/cm3 (20 C)
Solubility in water
1210 g/L
Dielectric constant
6.54 (19 C)
Heat of fusion
37.1 kJ/mol

Hazards and Protection.
Storage
Keep well closed.
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
Protective clothing including overalls, gloves and footwear should be worn. Some operations may necessitate use of resp protective equipment and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers.
Stability
Can detonate other materials. Reactive only under extreme conditions.
Incompatibilities
May react explosively.
Decomposition
When heated to incandescence, calcium nitrate decomposition into nitrogen oxide, calcium oxide and oxygen on decomposition, emits toxic fumes of nitrogen oxides.

Fire.
Fire fighting
Flood with water. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Fire potential
Moderate - by spontaneous chemical reaction, oxidizing material.
Hazards
May explode from heat or contamination. May react explosively with hydrocarbons (fuels). May ignite combustibles.
Combustion products
May give off toxic oxides of nitrogen when involved in fire.
Health
1
 
Flammability
0
 
 
Reactivity
3
 
 
Special
O

Health.
Poison_Class
4
Exposure effects
Throbbing headache is common. Seizures have been reported following severe intoxication. Behavioral deficits were observed in the adult offspring of rats who received sodium nitrite prenatally.
   Ingestion
Initial effects of ingestion are gastric irritation with nausea, vomiting and abdominal pain.
   Inhalation
Respiratory depression and cyanosis may be noted, due to methemoglobinemia.
   Skin
Cyanosis that minimally responds to oxygen therapy may be noted, and is indicative of probable methemoglobinemia.
   Eyes
Visual field defects have been reported in sodium nitrite poisoning.

First aid
 
   Ingestion
Immediate life support measures should be provided because of associated hypotension, seizures, and methemoglobinemia-induced anoxia. Ipecac induced vomiting is not recommended because of the potential for seizures.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. Administer oxygen and assist ventilation as required. Treatment should include recommendations listed in the oral exposure section when appropriate.
   Skin
Flush with water and seek medical assistance.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
1454
Response guide
Hazard class
5.1
Packing Group
III
 
USCG CHRIS Code
CNT
 
Std. Transport #
4918716