Is Propylene Tetramer CAS 6842-15-5 one pure C12 olefin?

No. It is a commercial mixture of branched C12 mono-olefin isomers produced by propylene oligomerization. The formula C12H24 is nominal; CAS identity alone does not define branching, double-bond position, tetramer concentration or distillation profile.

What is Propylene Tetramer used for?

Propylene Tetramer is mainly used as a branched C12 olefin feedstock for alkylbenzene, dodecylphenol and related surfactants, detergent intermediates, petroleum additives, lubricant additives, plasticizers and rust inhibitors. The downstream route determines the required tetramer mass fraction and olefin profile.

How is Propylene Tetramer different from linear 1-Dodecene?

Propylene Tetramer is a branched C12 mono-olefin mixture with CAS 6842-15-5, while linear 1-Dodecene is an alpha-olefin with CAS 112-41-4. The branching and double-bond position change reactivity, product structure and suitability for alkylation or oligomerization.

Which grade parameters and downstream route should be confirmed?

Compare tetramer mass fraction, bromine number, ASTM D86 distillation range, density, peroxide content, water and mechanical impurities, plus any inhibitor. Also identify the intended derivative, such as tridecyl alcohol, dodecylbenzene, dodecylphenol or a lubricant additive.

How should Propylene Tetramer be stored and transported?

Propylene Tetramer is a flammable liquid, commonly transported as UN 2850 or UN 3295, Hazard Class 3. Store in a cool, well-ventilated area away from heat, sparks, open flames and strong oxidizers, keep containers closed, and use appropriate transfer and spill-control measures.

Propylene Tetramer CAS 6842-15-5

Propylene Tetramer, CAS 6842-15-5, is a commercial mixture of branched C12 mono-olefins produced by propylene oligomerization. Grades are selected by tetramer fraction, bromine number, distillation range, density, peroxide content, water and inhibitor status for downstream alkylation or functionalization. For quotation, state the intended derivative, required test methods, quantity and delivery mode; the current COA, TDS and SDS can be supplied for the offered grade.

CAS: 6842-15-5
Synonyms: Propylene tetramer, C12 olefin mixture, Propylene oligomer C12, Tetrapropylene, Branched dodecene mixture
Einecs: 203-968-4
Molecular Formula: C₁₂H₂₄
Grade: Tetramer fraction, bromine number and distillation range to the agreed specification
Package: 200kg iron drum or 50kg plastic drum packaging

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Product Description

Propylene Tetramer (PT)

Aliases: Tetrapropylene; Dodecene; Branched dodecene mixture; Propylene tetramer

Chemical formula: C₁₂H₂₄

Molecular weight: 168.32 g/mol

CAS Number: 6842-15-5

EINECS: 203-968-4

Melting point: -33.6 °C

Boiling point: 213 °C

Water solubility: insoluble

Density: 0.760 (20 °C/4 °C)

Appearance: colorless liquid

Flash point: 56 °C

Application: used to produce petroleum additives, surfactants, detergents, anti-radiation greases and plasticizers.

Hazard description: flammable liquid.

UN number: UN 2850/3295

Physical and chemical properties

Chemical classification: olefins.

Spontaneous ignition temperature: 255 °C.

Explosion limit (VOL%): 0.8-4.9.

Corrosivity: no corrosive effect on materials.

Solubility: soluble in alcohols, ethers, acetone, petroleum ethers.

Vapor density (air = 1): 5.81

Vapor pressure: 0.1 kPa (47.2 °C)

Industrial use

1. C12 olefins or dodecenes are used as feedstocks to produce straight-chain or branched-chain alkylbenzene.

2. Dodecene is used to make dodecylphenol ethoxylates, dodecylphenol, sodium alkyl diphenyl ether disulfonate, etc.

3. Dodecene is used in the production of detergents, surfactants, plasticizers, petroleum additives and lubricant additives.

4. Dodecene is used as a feedstock for further olefin and surfactant derivatives.

5. Dodecene and hydrogen sulfide are used to synthesize C12 mercaptans.

6. Dodecene and maleic anhydride can produce T746 rust inhibitor.

FAQ - Technical & Supply Chain

Q:
Is Propylene Tetramer CAS 6842-15-5 one pure C12 olefin?

A: No. It is a commercial mixture of branched C12 mono-olefin isomers produced by propylene oligomerization. The formula C12H24 is nominal; CAS identity alone does not define branching, double-bond position, tetramer concentration or distillation profile.
Q:
What is Propylene Tetramer used for?

A: Propylene Tetramer is mainly used as a branched C12 olefin feedstock for alkylbenzene, dodecylphenol and related surfactants, detergent intermediates, petroleum additives, lubricant additives, plasticizers and rust inhibitors. The downstream route determines the required tetramer mass fraction and olefin profile.
Q:
How is Propylene Tetramer different from linear 1-Dodecene?

A: Propylene Tetramer is a branched C12 mono-olefin mixture with CAS 6842-15-5, while linear 1-Dodecene is an alpha-olefin with CAS 112-41-4. The branching and double-bond position change reactivity, product structure and suitability for alkylation or oligomerization.
Q:
Which grade parameters and downstream route should be confirmed?

A: Compare tetramer mass fraction, bromine number, ASTM D86 distillation range, density, peroxide content, water and mechanical impurities, plus any inhibitor. Also identify the intended derivative, such as tridecyl alcohol, dodecylbenzene, dodecylphenol or a lubricant additive.
Q:
How should Propylene Tetramer be stored and transported?

A: Propylene Tetramer is a flammable liquid, commonly transported as UN 2850 or UN 3295, Hazard Class 3. Store in a cool, well-ventilated area away from heat, sparks, open flames and strong oxidizers, keep containers closed, and use appropriate transfer and spill-control measures.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

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COA, TDS, SDS/MSDS and packing details are available on request.

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