What Is Calcium Metal 97.5%?
Calcium Metal (Ca) is a reactive alkaline earth metal used in metallurgy, metal purification and alloy manufacturing. Its reducing properties make it a valuable raw material for industrial processes requiring precise chemical control.
Calcium Metal 97.5% is a commercial grade specified by its calcium content. Buyers should confirm the complete chemical composition, impurity limits, particle size and physical form against the supplier’s product specification.
Common applications include metallurgical deoxidation, desulfurization, lead-calcium alloy production and the manufacture of certain metals. The required grade and form depend on the intended process and end-use requirements.
Why Is Calcium Metal Classified as UN1401 Class 4.3?
The primary reason Calcium Metal is classified as dangerous goods is its reaction with water. Contact with water can release flammable hydrogen gas and generate heat, creating potential fire and explosion hazards under certain conditions.
The chemical reaction is expressed as:
Ca + 2H₂O → Ca(OH)₂ + H₂↑
Hydrogen can ignite if it accumulates and encounters an ignition source. Calcium also reacts vigorously with acids, releasing hydrogen, which makes proper chemical compatibility important during storage and handling.
Calcium Metal is commonly assigned the following dangerous goods transport classification:
| Transport Information | Classification |
| UN Number | UN1401 |
| Proper Shipping Name | CALCIUM |
| Hazard Class | 4.3 |
| Packing Group | II |
| Primary Hazard | Dangerous When Wet |
Class 4.3 covers substances that emit flammable gases when they come into contact with water. Packing Group II indicates a medium level of danger under the applicable transport classification.
The classification is based on the material’s hazardous properties, not simply its calcium purity. The applicable classification must be confirmed against the product’s current Safety Data Sheet (SDS) and the regulations governing the intended transport route.
Calcium Metal Packaging, Storage and Transportation Requirements
For international shipments, packaging and handling arrangements must comply with the applicable dangerous goods regulations. Ordinary packaging should not be assumed suitable for Calcium Metal.
Moisture-resistant packaging
Packaging must meet the requirements applicable to UN1401 and protect the material from water and moisture. The approved packaging type, sealing method and required markings should be confirmed before shipment.
Storage and handling
Store Calcium Metal in suitable dry conditions, away from water, incompatible substances and sources of ignition. Keep containers properly closed and inspect them for damage or signs of moisture exposure.
Personnel should follow the supplier’s SDS and site-specific safety procedures. Water should not be used as a routine response to a calcium metal fire or spill; emergency measures must follow the applicable SDS and trained emergency-response guidance.
Dangerous goods transportation
Calcium Metal shipments may be subject to the IMDG Code for sea freight, ADR for road transport, RID for rail transport or other applicable regulations.
Before booking a shipment, buyers and suppliers should confirm the transport classification, approved packaging, labels, shipping documents and carrier acceptance requirements with a qualified dangerous goods logistics provider.
How to Choose a Reliable Calcium Metal Supplier?
Selecting a Calcium Metal supplier requires more than comparing quotation prices. Product conformity and the supplier’s ability to support compliant international shipments are also important.
Buyers should evaluate the following factors:
- Chemical composition: Confirm calcium content and applicable impurity limits against the purchase specification.
- Product form and size: Specify the required shape, particle size and quantity before requesting a quotation.
- Quality documentation: Request a Certificate of Analysis (COA) and the current SDS for the product being supplied.
- Packaging compliance: Confirm the proposed packaging meets the applicable dangerous goods requirements.
- Export coordination: Verify that the supplier can coordinate dangerous goods documentation and shipment arrangements for the destination market.
Clear technical requirements help suppliers prepare more accurate quotations and reduce the risk of specification mismatches or shipping delays.
Conclusion
Calcium Metal 97.5% is an important industrial material, but its reaction with water and the resulting release of flammable hydrogen require strict attention to dangerous goods classification and transport safety.
For buyers sourcing Calcium Metal from China, confirming product specifications, quality documents and compliant shipping arrangements before ordering is essential.
Contact our team with your required calcium content, product form, particle size and order quantity to discuss product specifications and export arrangements for your market.