Calcium Carbide 305L/kg Gas Yield

 

We supply calcium carbide in multiple lump sizes for industrial acetylene generation and chemical processing. Calcium carbide, CaC2, reacts with water to release acetylene gas, so gas yield is one of the main purchasing parameters for this material.

When you compare calcium carbide, you should confirm more than the product name. Gas yield, particle size, size distribution, ash, PH3 and H2S limits can all affect your incoming-material specification and acetylene-generation process.

 

Calcium Carbide Lumps

 

 

Particle Size	Top Grade Gas Yield ≥	A Grade Gas Yield ≥	Accept Grade Gas Yield ≥	Size Percentage	Ash ≤
80-120mm	300 L/kg	295 L/kg	280 L/kg	≥90%	1%
50-80mm	300 L/kg	295 L/kg	280 L/kg	≥90%	1%
25-50mm	300 L/kg	295 L/kg	280 L/kg	≥90%	1%
15-25mm	300 L/kg	285 L/kg	260 L/kg	≥90%	1%
7-15mm	290 L/kg	270 L/kg	250 L/kg	≥90%	1%
4-7mm	280 L/kg	260 L/kg	240 L/kg	≥90%	1%
2-4mm	260 L/kg	240 L/kg	220 L/kg	≥90%	1%

The listed gas-yield values are measured at 20°C and 101.3 kPa. When gas yield is an acceptance-critical parameter, confirm the required test condition and minimum value in the purchase specification.

 

 

Gas yield alone does not define calcium carbide quality. The impurities released with acetylene can also matter to downstream gas quality and process control.

Gas Impurity	Listed Maximum
PH3	≤ 0.08% (V/V)
H2S	≤ 0.10% (V/V)

If your acetylene process uses tighter PH3 or H2S limits, send us the maximum values before quotation so we can confirm whether the required specification is available.

 

 

Calcium carbide reacts with water to form acetylene gas and calcium hydroxide:

This reaction is the reason gas yield is used as a commercial quality parameter for calcium carbide.

If you want more detail on the reaction mechanism and by-products, see our calcium carbide and water reaction explanation .

Because moisture starts the reaction and releases flammable acetylene, calcium carbide must be protected from water and uncontrolled moisture during storage and handling.

For additional handling background, you can also read our calcium carbide handling precautions .

 

 

Particle size should be selected together with gas yield rather than treated as a cosmetic specification.

The current page lists sizes from 2-4mm up to 80-120mm. Different size ranges can be selected according to your feeding system and acetylene-generation equipment.

Before ordering, confirm:

• required minimum and maximum lump size;
• acceptable size percentage;
• required gas yield;
• acceptable fines;
• ash limit;
• your actual acetylene-generation process.

If your process commonly uses a medium lump range, you can also compare our 20-50mm Calcium Carbide 295L/kg specification before selecting the final size and gas-yield target.

 

 

Moisture control is a critical part of calcium carbide purchasing and storage because CaC2 begins reacting when exposed to water.

For shipment and warehouse planning, you should confirm that the packing and storage arrangement keeps the material dry and protects it from uncontrolled moisture exposure.

Your internal handling procedure should also account for the fact that acetylene generated from accidental moisture contact is flammable.

Always follow the applicable product SDS, local regulations and your facility's chemical-handling procedures.

 

 

We inspect material before shipment and can align batch-control items with your agreed specification.

For calcium carbide orders, you can confirm:

• particle size;
• minimum gas yield;
• size percentage;
• ash content;
• PH3 and H2S limits;
• batch identification and COA requirement.

If 305 L/kg is your minimum acceptance requirement, state it explicitly so the value can be confirmed before order approval.

 

 

 

Our current listed calcium carbide supply capacity is 3,000 metric tons per month. Typical delivery is stated as 7-15 days after payment, subject to the actual grade, quantity, stock, packing and shipping schedule.

Before shipment, send us the required gas yield, lump size and destination so we can confirm the appropriate production and delivery arrangement.

 

 

RFQ Item	What You Should Provide
Gas Yield	Required minimum L/kg, including 305 L/kg if applicable
Particle Size	Required lump-size range
Size Percentage	Required acceptable fraction
Ash	Maximum acceptable ash content
Gas Impurities	Required PH3 and H2S limits
Quantity	Trial or bulk order quantity
Packing	Required moisture-protected export packing
Documents	Batch COA, SDS or other required export / inspection documents
Destination	Destination port or delivery location

 

 

Q1: What does calcium carbide gas yield mean?
Gas yield indicates the volume of acetylene generated from a defined mass of calcium carbide under the specified test conditions.

Q2: Does the current table confirm 305 L/kg?
No. The currently published table lists values up to 300 L/kg. If you require 305 L/kg, send us that minimum so we can confirm the available batch specification before quotation.

Q3: Which particle sizes are listed?
The current ranges are 2-4mm, 4-7mm, 7-15mm, 15-25mm, 25-50mm, 50-80mm and 80-120mm.

Q4: What are the listed PH3 and H2S limits?
The current specification lists PH3 ≤0.08% (V/V) and H2S ≤0.10% (V/V).

Q5: Why must calcium carbide be protected from moisture?
Because CaC2 reacts with water and releases flammable acetylene gas. Keep storage and handling aligned with the current SDS and your facility's chemical-safety procedures.

Q6: What payment terms are available?
The current page lists T/T, D/P and L/C. Final payment terms should be confirmed in the quotation and sales contract.

 

 

 

We can confirm calcium carbide gas yield, particle size, impurity limits, packing and batch documentation according to your agreed purchase specification.

 

 

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