483-65-8

Basic information

• Product Name: RETENE
• Synonyms: 7-ISOPROPYL-1-METHYLPHENANTHRENE;1-METHYL-7-ISOPROPYLPHENANTHRENE;RETENE;1-Methyl-7-(1-methylethyl)phenanthrene;1-methyl-7-isopropylphenathrene;Methyl-1-isopropyl-7-phenanthrene;Methylisopropylphenanthrene;NCI-C55390
• CAS NO: 483-65-8
• Molecular Formula: C₁₈H₁₈
• Molecular Weight: 234.34
• EINECS: 207-597-9
• Product Categories: Aromatic Hydrocarbons (substituted) & Derivatives
• Mol File: 483-65-8.mol
• Article Data: 4

Chemical Properties

• Melting Point: 95-97 °C(lit.)
• Boiling Point: 208 °C10 mm Hg(lit.)
• Flash Point: 177.812 °C
• Appearance: Beige flakes
• Density: 1.0350
• Vapor Pressure: 5.34E-06mmHg at 25°C
• Refractive Index: 1.6582 (estimate)
• Stability: Stable. Incompatible with strong oxidizing agents.
• Merck: 13,8245
• CAS DataBase Reference: RETENE(CAS DataBase Reference)
• NIST Chemistry Reference: RETENE(483-65-8)
• EPA Substance Registry System: RETENE(483-65-8)

Safety Data

• WGK Germany: 3
• Hazardous Substances Data: 483-65-8(Hazardous Substances Data)

Usage

Uses

Retene, methyl isopropyl phenanthrene or 1-methyl-7-isopropyl phenanthrene, C18H18, is a polycyclic aromatic hydrocarbon present in the coal tar fraction, boiling above 360 °C. It occurs naturally in the tars obtained by the distillation of resinous woods.

General Description

Plates or scales (from ethanol) or pearly-beige small flakes.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Upon treatment with CrO3 in acetic acid forms RETENEquinone (C18H1. .

Purification Methods

Crystallise retene from EtOH. The picrate has m 126o (from EtOH). The 1:1 1,3,5-trinitrobenzene-complex has m 144o (from EtOH). [Beilstein 5 H 683, 5 II 598, 5 III 2199.]

InChI:InChI=1/C18H18/c1-12(2)14-7-10-17-15(11-14)8-9-16-13(3)5-4-6-18(16)17/h4-12H,1-3H3

Upstream product

• 5398-75-4 7-isopropyl-1-methyl-phenanthrene-9,10-dione 
• 666-84-2 abietinol 
• 510-39-4 maleopimaric acid 
• 2115-41-5 maleopimaric acid 
• 10034-85-2 hydrogen iodide 
• 33465-21-3 hinokiol 
• 873382-41-3 18-nor-abietane 
• 18508-99-1 13α-Methoxy-13.14-dihydro-abietinsaeure-methylester 
• 32624-65-0 7-isopropyl-1-methyl-9,10-dihydro-phenanthrene 
• 57166-09-3 4ξH,19-nor-abieta-7,13-diene 
• 640-43-7 ferruginane 
• 857831-82-4 2-hydroxy-5-isopropyl-1-(2-methyl-phenethyl)-cyclohexanecarboxylic acid ethyl ester 
• 98864-53-0 7-isopropyl-1-methyl-tetradecahydro-phenanthrene 
• 469-85-2 (10S)-phylloclad-16-ene 

Downstream Products

• 832-69-9 1-methylphenanthrene 
• 90-12-0 1-Methylnaphthalene 
• 91-57-6 2-Methylnaphthalene 
• 5398-75-4 7-isopropyl-1-methyl-phenanthrene-9,10-dione 
• 64-19-7 acetic acid 
• 88-99-3 benzene-1,2-dicarboxylic acid 
• 109401-21-0 1-(8-methyl-[2]phenanthryl)-ethanone 
• 120-12-7 anthracene 
• 101943-61-7 trans-1-Styryl-7-isopropyl-phenanthren 
• 23802-44-0 trans-1-<3,4-Dimethoxy-styryl>-7-isopropyl-phenanthren 
• 23802-45-1 trans-1-(4-Phenyl-styryl)-7-isopropyl-phenanthren 

Relevant articles and documents

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Emission factors and importance of PCDD/Fs, PCBs, PCNs, PAHs and PM 10 from the domestic burning of coal and wood in the U.K.

This paper presents emission factors (EFs) derived for a range of persistent organic pollutants (POPs) when coal and wood were subject to controlled burning experiments, designed to simulate domestic burning for space heating. A wide range of POPs were emitted, with emissions from coal being higher than those from wood. Highest EFs were obtained for particulate matter, PM10, (～ 10 g/kg fuel) and polycyclic aromatic hydrocarbons (～ 100 mg/ kg fuel for ΣPAHs). For chlorinated compounds, EFs were highest for polychlorinated biphenyls (PCBs), with polychlorinated naphthalenes (PCNs), dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) being less abundant. EFs were on the order of 1000 ng/kg fuel for ΣPCBs, 100s ng/ kg fuel for ΣPCNs and 100 ng/kg fuel for ΣPCDD/Fs. The study confirmed that mono- to trichlorinated dibenzofurans, Cl1,2,3DFs, were strong indicators of low temperature combustion processes, such as the domestic burning of coal and wood. It is concluded that numerous PCB and PCN congeners are routinely formed during the combustion of solid fuels. However, their combined emissions from the domestic burning of coal and wood would contribute only a few percent to annual U.K. emission estimates. Emissions of PAHs and PM 10 were major contributors to U.K. national emission inventories. Major emissions were found from the domestic burning for Cl1,2,3DFs, while the contribution of PCDD/F-ΣTEQ to total U.K. emissions was minor.

Analysis of hydrocarbons and ash particles formed from contaminated industrial biowaste under combustion-like conditions

A concept of multizone combustion of pulp and paper-generated biowaste was investigated. The biowaste was initially fed into the low-temperature region (1250 K) and then subjected to the high-temperature treatment (1770 K), which was followed by sudden quenching in a second lowtemperature zone (1250 K). This type of burning is called the low-high-low temperature process (LHL). It was found that destruction of selected polycyclic aromatic compounds occurred during the LHL process before they were emitted into the atmosphere. The biowaste material underwent dramatic morphological changes, which influenced segregation of metals within ash particles and their leachability. The heavy metals (Cr, Cd, Pb) were encapsulated and immobilized within the ash particle core surrounded by a compact shell consisting of condensed layers of light nonhazardous metals (Si, Al, Na, K). It seems that the multizone combustion of biowaste may be an attractive and useful way for the clean and efficient disposal of contaminated biowastes.