Quantity: 700,000 per year, 5 years contract
CIF China port Payment : By irrevocable L/C at sight for 100% of invoice value, for each 140,000 CUBIC Shipped per month’s shipment total value.
Performance Bond: 2% of the face value of the L/C
Spec: See below
C4 Purchase Requirement for China’s Domestic Chemical Industrial Companies
|No.||NAME||名称||CONTENT 组分||REMARK 备注|
|4||Butylene, Cis-Butene, Trans Butene||正丁烯，顺丁烯，反丁烯||＞50%||Flexible, but at least 42% 可调整，但至少42%|
What is C4?
Liquefied Petroleum Gas or LPG is a commonly marketed petroleum product and usually comprises of C3 and C4 hydrocarbons – propane, propylene, n-butane, isobutane, butylene etc. LPG is a mixture of hydrocarbons occurring between lighter components occurring in the utility fuel gas (C1 and C2) and heavier liquids occurring in naphtha and gasoline (c5 and onwards). The distillation range for LPG hydrocarbons at atmospheric pressure occurs between -490F to 340F. Some properties of commercial quality propane and butane (not pure propane and butane but mixtures of c3/c4 components) are presented in the following table and a combination of these may be approximately used as properties of LPG.
|Specific gravity of liquid at 600F/600F||0.509||0.582|
|Initial Boiling point at atmospheric pressure||-510F||150F|
|Initial dew point at atmospheric pressure||-460F||0.5820F|
|Ignition temperature in air||9200F-10200F||9000F-10000F|
|Maximum flame temperature||32950F||36150F|
|Max / Min limits of flammability (wt% of gas in air)||2.4 / 9.6||1.9 / 8.6|
|wt% of gas in air for maximum flame temperature||4.4||3.3|
The C3/C4 hydrocarbons in crude oil are separated at the atmospheric distillation column. They are further sent to merox unit for removal of hydrogen sulfide gas. Light C3/C4 hydrocarbons are also available from cracking operations for hydrocarbons. The unsaturated C3/C4 hydrocarbons separated from cracking are also sent to LPG product. Please Note: We will not respond if we do not know who we are dealing with, so please email your information with your full details to email@example.com and we will respond with a Letter of Intent. Thank you.