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Naphthalene CAS#91-20-3

Naphthalene CAS#91-20-3 Promotion Season Now in Store and Free Sample for Testing with Factory Price

Chemical Name：Naphthalene

CAS No.:91-20-3

Molecular Formula:C10H8

Molecular weight: 128.17

Sample: Available

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Product Details

Products Description of Naphthalene CAS#91-20-3

Naphthalene is the simplest condensed ring aromatic hydrocarbon with a chemical formula of C10H8. It is formed by the fusion of two benzene rings sharing two adjacent carbon atoms. It is widely used as a raw material for the preparation of dyes, resins, solvents, etc., and is also used As an insect repellent.

Naphthalene Chemical Properties

Melting point	80-82 °C (lit.)
Boiling point	218 °C (lit.)
density	0.99
vapor density	4.4 (vs air)
vapor pressure	0.03 mm Hg ( 25 °C)
refractive index	1.5821
Fp	174 °F
storage temp.	Store below +30°C.
solubility	methanol: soluble50mg/mL, clear, colorless
form	Faint beige to brown to salmon red powder
color	White to almost white
Specific Gravity	1.145
Odor	at 10.00 % in benzyl benzoate. pungent dry tarry
Odor Type	pungent
explosive limit	0.9-5.9%(V)
Water Solubility	30 mg/L (25 ºC)
Merck	14,6370
BRN	1421310
Henry's Law Constant	5.64 at 25 °C (thermodynamic method-GC/UV spectrophotometry, Altschuh et al., 1999)
Exposure limits	TLV-TWA 10 ppm （～50 mg/m3) (ACGIH, MSHA, and OSHA); STEL 15 ppm (～75 mg/m3) (ACGIH); IDLH 500 ppm.
Dielectric constant	2.5（85℃）
InChIKey	UFWIBTONFRDIAS-UHFFFAOYSA-N
LogP	3.7 at 25℃
CAS DataBase Reference	91-20-3(CAS DataBase Reference)
NIST Chemistry Reference	Naphthalene(91-20-3)
IARC	2B (Vol. 82) 2002
EPA Substance Registry System	Naphthalene (91-20-3)

Safety Information

Hazard Codes	Xn,N,F,T
Risk Statements	22-40-50/53-67-65-38-11-39/23/24/25-23/24/25-52/53-20
Safety Statements	36/37-46-60-61-62-45-16-7-33-25-9
RIDADR	UN 1334 4.1/PG 3
WGK Germany	3
RTECS	QJ0525000
Autoignition Temperature	978 °F
TSCA	Yes
HazardClass	4.1
PackingGroup	III
HS Code	29029010
Hazardous Substances Data	91-20-3(Hazardous Substances Data)
Toxicity	Acute oral LD50 for guinea pigs 1,200 mg/kg, mice 533 mg/kg, rats 1,250 mg/kg (quoted, RTECS, 1985).
IDLA	250 ppm

Product Application of Naphthalene CAS#91-20-3

Naphthalene is the most important condensed ring hydrocarbon in industry. It is mainly used to produce phthalic anhydride, various naphthols, naphthylamines, etc. It is an intermediate for the production of synthetic resins, plasticizers, dyes, surfactants, synthetic fibers, coatings, and pesticides. , raw materials for medicines, spices, rubber additives and pesticides.

The use distribution of naphthalene varies from country to country. Approximately 70% is used for the production of phthalic anhydride, approximately 15% is used for dye intermediates and rubber additives, approximately 6% is used for pesticides, and approximately 4% is used for tanning agents. The United States uses a larger proportion to produce pesticides, mainly for the production of carbaryl. Using naphthalene as raw material, various intermediates can be produced through unit operations such as sulfonation, nitration, reduction, amination, and hydrolysis.

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