Audited Supplier
25-50mm
75-20-7
Cac2
75-20-7
Wanding
Drums
25-50mm, 50-80mm, 80-120mm
China
284910
Product Description
| Commodity | Calcium Carbide |
| Formula | CaC2 |
| HS code | 2849.1000 |
| CAS No | 75-20-7 |
| UN No | 1402 |
| Shipping way | By sea |
| Payment way | TT bank(30%deposit+70%balance) |
| Size of item | 2-7mm, 7-15mm,15-25mm, |
| 25-50mm,50-80mm, 80-120mm | |
| Packing | Drum(50kg/100kg) |
| One 20GP container loading | 225 Drums/100kg |
| 450 Drums/50kg | |
| One 20GP container loading Net weight | 22.5 Tons |
| Place of origin | Ningxia, China |
| Port of departure | Shanghai port |
Calcium Carbide (CaC2) - Key Applications and Functions
Calcium carbide (CaC2), commonly known as carbide, is a vital inorganic compound with significant industrial and practical value. Below are its primary applications and detailed explanations:
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1. Production of Acetylene (CH)
- Reaction Principle: Calcium carbide reacts vigorously with water to produce acetylene gas and calcium hydroxide.
- Applications:
- Metal working: Acetylene-oxygen flames (reaching temperatures above 3000°C) are used for welding, cutting, and thermal spraying of metals.
- Chemical Feedstock: Production of polyvinyl chloride (PVC), acetic acid, and acetone. Although ethylene-based processes are now dominant, acetylene remains critical for niche chemical syntheses.
- Historical Use: Fuel source for early mining lamps and signal lights.
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2. Metallurgical Industry
- Desulfurizing Agent: In steel making, CaC2 reacts with sulfur to form calcium sulfide, reducing sulfur content in steel and improving ductility.
- Reducing Agent: Reduces metal oxides at high temperatures to aid in metal extraction (e.g., ferroalloy production).
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3. Agricultural Applications
- Fruit Ripening: Acetylene released from mimics ethylene (a plant hormone), accelerating the ripening of fruits like bananas and mangoes.
-Soil Amendment**: The alkaline calcium hydroxide byproduct neutralizes acidic soils, though overuse must be avoided to prevent excessive alkalinity.
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4.Production of Calcium Cyanamide
- Fertilizer and Pesticide**: At high temperatures, CaC2 reacts with nitrogen gas to form calcium cyanamide, a slow-release nitrogen fertilizer and pesticide.
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5. Laboratory Uses
- Acetylene Source: Provides acetylene for organic synthesis, combustion experiments, and gas chromatography.
- Safety Note: Acetylene has a wide explosive range (2.5-82% in air), requiring strict ventilation and flame precautions.
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6. Other Applications
- Carbon Source: Acts as a reactive carbon donor in certain chemical reactions.
- Emergency Lighting: Historically used in carbide lamps, now largely replaced by battery-powered systems.
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Safety Precautions
- Storage: Keep in airtight, moisture-proof containers (contact with water releases flammable acetylene).
- Handling: Wear protective goggles and gloves to avoid skin/eye irritation from dust.
-Acetylene Risks: Highly flammable; ensure proper ventilation and avoid ignition sources.
Calcium carbide's versatility makes it indispensable across industries, but strict adherence to safety protocols is essential to mitigate risks.
Propertic
It is a gray, yellow and brown or black solid,and its density is 2.22 g/cm3 . It will lose luster
and appear gray because of absorbing moisture in the air. Moreover, it can conduct electricity, it
is very active, and it can react with many kinds of gases and liquors under certain temperature. It
can seriously react with water and turn into Acetylene and cakcium hydroxide.
Packing
Hermetically sealed with 50kg or 100kg iron buckets. It should be marked by"CAULCIUM
CARBIDE:"AVOIDING WATER AND FIRE".
Cautions during transportation
The packing must be kept in good condition and the goods should be stored in a
dry,cool,and ventilated place. It should be kept separate from the combustible materials and the
acid. It should avoid contacting water and moisture. It should give off the Acetylene of iron drum
before storing. Rolling drums, heavily putting down and colliding are not allowed in order to
avoid the spark that can lead to explosion. Sound time for storing is 12-24 months.
How to handle with breakage and leakage of packing
Collect the material(Rubber glover must be used in operation). Then, wash the
contaminated objects and spot with running water.
How to treat in urgency
Appearing dizziness,headache or spit,people should remove to the place in fresh air. Heavier
should be removed to hospital as soon as possible.
Method of extinguishing a fire:
Use carbon dioxide,sand and Soda Ash.
Remarks:
UN NO. 1402
CLASS 4.3-FLAMMABLE ITEM
