2876-51-9

Basic information

• Product Name: 1-octylnaphthalene
• Synonyms: 1-Octylnaphthalene; naphthalene, 1-octyl-
• CAS NO: 2876-51-9
• Molecular Formula: C₁₈H₂₄
• Molecular Weight: 240.3832
• Mol File: 2876-51-9.mol

Chemical Properties

• Boiling Point: 354.8°C at 760 mmHg
• Flash Point: 180.5°C
• Density: 0.941g/cm³
• Vapor Pressure: 6.67E-05mmHg at 25°C
• Refractive Index: 1.55
• CAS DataBase Reference: 1-octylnaphthalene(CAS DataBase Reference)
• NIST Chemistry Reference: 1-octylnaphthalene(2876-51-9)
• EPA Substance Registry System: 1-octylnaphthalene(2876-51-9)

Safety Data

• Hazardous Substances Data: 2876-51-9(Hazardous Substances Data)

Usage

Uses

Used in Plasticizer Industry:
1-octylnaphthalene is used as a plasticizer for enhancing the flexibility and workability of vinyl and other polymers during their production process. Its solubility in organic solvents makes it an effective additive in this application.
Used in Solvent Applications:
In various industrial processes, 1-octylnaphthalene serves as a solvent, leveraging its ability to dissolve other substances, which is crucial for the manufacturing and processing of different products.
Used in Insecticide Manufacturing:
1-octylnaphthalene is utilized as a carrier for active ingredients in the production of insecticides. Its role is to facilitate the even distribution and effectiveness of the insecticidal compounds.
Used in Fragrance Industry:
In the personal care and home care sectors, 1-octylnaphthalene is employed as a fragrance ingredient, adding scent to various products while also potentially contributing to their performance characteristics.
It is important to handle 1-octylnaphthalene with care due to its potential to cause skin and eye irritation upon contact, emphasizing the need for proper safety measures during its use in various applications.

Upstream product

• 91-20-3 naphthalene 
• 74-85-1 ethene 

Downstream Products

• 111844-12-3 sodium 4-(n-octyl)naphthalene-1-sulfonate 

Relevant articles and documents

Synergistic effects of alkali metals in the alkylation of naphthalene and toluene with ethene in the ArH-alkali metal systems in THF (ArH - naphthalene, phenanthrene)

The use of mixtures of metallic lithium and sodium in the naphthalene-alkali metal systems in THF leads to a synergistic acceleration of the naphthalene alkylation with ethene at room temperature and atmospheric pressure. The greatest synergistic effect is observed at a Li:Na molar ratio of 2:1. Under these conditions, the overall conversion of naphthalene into alkylation products (linear 1-alkylnaphthalenes and their dihydro derivatives) attains 88% after 24 h (a (Li + Na):C10H8 ratio is 2:1). The use of mixtures of metallic lithium and potassium in such systems results, however, in a synergistic retardation of the alkylation process. The strongest retarding effect is observed at a Li:K molar ratio of 1:1. The efficiency of the toluene alkylation with ethene in the naphthalene-alkali metal systems in THF is also increased on the replacement of lithium or sodium by their mixtures. The best results are obtained at a Li:Na molar ratio of 1:3. With this Li:Na ratio, toluene is almost quantitatively converted into linear and α-branched higher monoalkylbenzenes (24 h, (Li + Na):C10H8 = 2:1). The rate of the naphthalene alkylation with ethene in the presence of toluene is enhanced as well on an introduction of mixtures of lithium and sodium into the system. However the maximum of the activity is shifted here towards higher lithium content (Li:Na = 1:1). A similar synergistic effect of lithium and sodium was found on studying the toluene alkylation with ethene in the phenanthrene-Li-Na systems in THF (a (Li + Na):phenanthrene ratio is 3:1). An addition of potassium to sodium also considerably increases the efficiency of the toluene and naphthalene alkylation with ethene in the naphthalene-based systems. The possible mechanism of the alkali metal synergism in the above-mentioned alkylation reactions is discussed.

Activation of C-H bonds of hydrocarbons by the ArH-alkali metal systems in THF (ArH - naphthalene, biphenyl, anthracene, phenanthrene, trans-stilbene, pyrene). Alkylation of naphthalene and toluene with ethene

Systems based on naphthalene and alkali metals (Li, Na, K) in THF are able to induce the alkylation of naphthalene with ethene at room temperature and atmospheric pressure. The highest activity in this reaction is exhibited by the naphthalene-potassium system which converts naphthalene into 1-ethylnaphthalene (1) and small amounts of two isomeric dihydro derivatives of 1 in a yield of 85% (24 h, K:C10H8 = 2:1). The same alkylation products are formed when metallic sodium is used instead of potassium. The interaction of ethene with the naphthalene-lithium system (24 h, Li:C10H8 = 2:1) affords 1 together with 1-n-butylnaphthalene (4), 1-n-hexylnaphthalene (5), 1-n-oktylnaphthalene (6) and dihydro derivatives of 5 and 6 in a total yield of 60%. Alkylation of toluene with ethene in the naphthalene-alkali metal systems leads to the formation of higher monoalkylbenzenes. The greatest toluene conversion (48%, 24 h) is observed on using the lithium-containing system (Li:C10H8 = 2:1), in the presence of which a mixture of n-propylbenzene (11), n-pentylbenzene (12), 3-phenylpentane (13) and 3-phenylheptane (14) is produced from ethene and toluene. On the replacement of lithium by sodium or potassium, only 11 and 13 are obtained. A treatment of biphenyl, phenanthrene, trans-stilbene, pyrene and anthracene with alkali metals in THF also gives systems capable of catalyzing the alkylation of toluene with ethene at 22 °C. Of particularly active is the stilbene-lithium system (Li:stilbene = 3:1) which converts toluene into a mixture of 11-14, n-heptylbenzene and 5-phenylnonane in a yield of 58%. In all cases, the rate of the alkylation considerably increases in the presence of the solid phase of alkali metal. The mechanism of the reactions found is discussed.