Salts & Minerals
REACH
Calcium
CAS Number
7440-70-2
EC Number
231-179-5
What is Calcium?
Calcium (CAS 7440-70-2) is a reactive alkaline earth metal in elemental form.
Where is Calcium used?
- Steelmaking and non-ferrous metallurgy: desulfurization, deoxidation, inclusion modification
- Nuclear and specialty metals: reduction agent for high-purity titanium, uranium and rare earth metals via metallothermic reduction
- Chemical industry: precursor for calcium hydride and other reactive calcium compounds used in organic synthesis
- Production of specialized industrial desiccants
- Battery and energy storage research: anode material in next-generation calcium-ion cell development
- As a powerful reducing agent and desulfurization reagent, it drives critical metallurgical processes.
Commercial specifications
- Purity levels typically 98% to 99.5%+
- Technical and high-purity grades
- Packaged under inert atmosphere or in sealed containers
Other Names (Synonyms)
element 20|20Ca|Calcium, elemental|SY7Q814VUP|Calcium element|Blood Coagulation Factor IV|Factor IV|Praval
What are the physical properties of Calcium?
Melting Point 842 °C
Boiling Point 1484 °C
Density 1.54 g/cm³ @ Temp: 20 °C
Appearance Calcium is a silvery-white metal when freshly cut, which tarnishes to a blue-gray color in air. It can also be found as a powder.
Color Silver-white
Odor Odorless
Form pieces
Water Solubility reacts with H2O, alcohols, dilute acids to evolve H2 [MER06]
pH 0.5 (20°C in H2O)
How is Calcium classified and handled safely? Learn More
Danger
GHS02· Flammable GHS05· Corrosive
Hazard Statements
H250 Catches fire spontaneously if exposed to air
H261 In contact with water releases flammable gas
H314 Causes severe skin burns and eye damage
H318 Causes serious eye damage
Precautionary Statements
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P222 Do not allow contact with air.
P231 Handle and store contents under inert gas/… .
P233 Keep container tightly closed.
Which trade and regulatory codes apply to Calcium?
HS Code 28051200
UN Number 1401
ADR Class 4.3
Packing Group II
Storage Class 4.3 - Hazardous materials which set free flammable gases upon contact with water
WGK (Germany) 1