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Chrysene

Chrysene structure

CAS No:
218-01-9
Formula:
C18H12
Chemical Name:
Chrysene
Synonyms:
Chrysene;1,2-Benzphenanthrene;Benzo[a]phenanthrene;1,2-Benzophenanthrene;NSC 6175;[4]Phenacene;27274-05-1
Categories:
Chemical Reagents > Organic Reagents

Description

Chrysene is a high molecular weight (HMW), polycyclic aromatic hydrocarbon (PAH) known for its recalcitrance and carcinogenic properties[1].

Chrysene Basic Attributes

Molecular Weight：

228.29

Exact Mass：

228.29

EC Number：

205-923-4

HScode：

2902909090

Characteristics

PSA：

XLogP3：

5.91

Appearance：

Chrysene appears as a crystalline solid. Denser than water and insoluble in water. The primary hazard is the threat to the environment. Immediate steps should be taken to limit spread to the environment. Toxic by ingestion. Used to make other chemicals.

Density：

1.274 g/cm³ @ Temp: 20 °C

Melting Point：

258.2 °C

Boiling Point：

448 °C

Flash Point：

-17℃

Refractive Index：

1.771

Water Solubility：

H2O: insoluble

Storage Conditions：

2-8°C

Vapor Pressure：

4.3 at 25 °C (de Kruif, 1980)

Toxicity：

Acute LC 50 for Neanthes arenaceodentata >50 μg/L (Rossi and Neff, 1978).

Safety Information

Packing level：

III

Hazard category：

Transport codes：

UN 3077 9/PG 3

wgk germany：

hazard class code：

45-50/53-68-40-67-66-36-11-52/53-36/37/38

safety instructions：

53-45-60-61-36/37-26-16-24/25-23

RTECS Number：

GC0700000

Marks：

T,N,Xn,F

Storage features：

Separated from strong oxidants. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.

Stability/Shelf Life：

Stable. Combustible. Incompatible with strong oxidizing agents.

Precautionary statement(s)：

P201-P273-P281-P308 + P313-P501

Hazard Statements：

H341-H350-H410

Chrysene Use and Manufacturing

Methods of Manufacturing

Extracted from coal char or warm pitch distillation. The distillate fraction cut from the distillation of the pitch distillate is mixed with a mixed solvent of benzene and trimethylbenzene in a ratio of 1:0.5 or 1:1, and extracted at a temperature of 110-130°C for 3 hours, with stirring during extraction. After about 20h of precipitation, the crystals were separated by vacuum filtration and dried to obtain industrial production. Recrystallize twice with 1:1 wash oil. The obtained crude product is dissolved in clean wash oil in the presence of 2%-5% maleic anhydride and heated to 125-135℃. Then it is crystallized at 20-25°C, separated by a centrifuge, washed with benzene and dried to obtain a product with a purity of 85%-90%.

Uses

Occurs in coal tar. Is formed during distillation of coal, in very small amount during distillation or pyrolysis of many fats and oils. Chrysene is one of the basic polycyclic aromatic hydrocarbon (PAH) which is toxic environmental pollutant and consistently exposed to sunlight. However , little information is available on its photogenotoxicity. Listen The objective of the present study was to analyze the effects of Chrysene, under environmental intensity of UVB (0.6 mW/cm2) in human skin epidermal cell line (HaCaT).

Computed Properties

Molecular Weight:228.3
XLogP3:5.7
Exact Mass:228.093900383
Monoisotopic Mass:228.093900383
Heavy Atom Count:18
Complexity:264
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Maleic anhydride

Asphalt

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