Description

Residues (Petroleum), Catalytic Cracking Depropanizer, C4-Rich is a specialized hydrocarbon stream derived from the fluid catalytic cracking (FCC) process, specifically from the depropanizer column overheads. This product is valued for its high concentration of C4 hydrocarbons, primarily butenes and butanes, making it a versatile and economical feedstock for downstream petrochemical synthesis. It is essential for chemical manufacturers and refineries seeking a reliable source of reactive olefins and paraffins for producing polymers, fuels, and other high-value intermediates.

Application

• Petrochemical Feedstock: Serves as a primary raw material for the production of butyl rubber, polyisobutylene, and other synthetic elastomers.
• Alkylation Feed: Used in alkylation units to produce high-octane gasoline blending components.
• Chemical Intermediate: Provides butenes for the manufacture of methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), and sec-butanol.
• Polymer Grade Monomer: Butene-1 extracted from this stream can be used as a comonomer in the production of linear low-density polyethylene (LLDPE).
• Fuel & Refinery Operations: Utilized as a blending component for liquefied petroleum gas (LPG) and as a process stream within refinery fuel gas systems.
• Synthetic Lubricant Production: Acts as a feedstock for producing polyalphaolefins (PAOs) and other synthetic base oils.

Basic Information

Product Name	Residues (Petroleum), Catalytic Cracking Depropanizer, C4-Rich
CAS No.	71329-37-8
Molecular Formula	Complex mixture; primarily C4 hydrocarbons
Molecular Weight	Varies by composition
Synonyms	FCC Depropanizer Overheads; C4-Rich FCC Stream; Catalytic Cracker C4s; Petroleum C4 Raffinate; Butene-Butane Stream; C4 Cut (FCC); Hydrocarbon mixture, C4-rich; Light catalytic cracked oil
EINECS	Contact for details

Quality Control

Our C4-Rich Depropanizer Residue is produced under strict process controls to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive gas chromatography (GC) analysis to determine hydrocarbon composition (butenes, butanes, propane). Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing composition and key physical properties are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly volatile nature, store in a cool, well-ventilated area away from heat, sparks, and open flame. Containers should be kept tightly sealed and grounded to prevent static discharge. Recommended storage temperature is below 30°C (86°F).

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (GC)	Complies
C4 Hydrocarbon Content	Min. 85%
Butene Content (Total)	Min. 50%
Propane Content	Max. 10%
C5+ Hydrocarbons	Max. 5%
Density @ 15°C	~0.58 - 0.62 g/mL
Vapor Pressure @ 37.8°C	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.