Naphthalene manufacturers and suppliers in india

Naphthalene

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

Flash point:: 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)

Dielectric constant: 2.5（85℃）

Exposure limits: TLV-TWA 10 ppm （～50 mg/m³) (ACGIH, MSHA, and OSHA); STEL 15 ppm (～75 mg/m³) (ACGIH); IDLH 500 ppm.

InChIKey: UFWIBTONFRDIAS-UHFFFAOYSA-N

LogP: 3.7 at 25℃

Safety Information

Symbol(GHS): GHS02,GHS07,GHS08,GHS09

Signal word: Warning

Hazard statements: H228-H302-H351-H410

Precautionary statements: P202-P210-P240-P273-P301+P312-P308+P313

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

OEB: A

OEL: TWA: 10 ppm (50 mg/m3), STEL: 15 ppm (75 mg/m3)

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

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

Use

Naphthalene is a white solid chemical that vaporizes easily. It has a strong smell. You can sometimes smell naphthalene in the air or in water. Called white tar and tar camphor, naphthalene is used in mothballs and moth flakes. Petroleum and coal contain naphthalene. Naphthalene, the simplest of the fused or condensed ring hydrocarbon compounds composed of two benzene rings sharing two adjacent carbon atoms. Naphthalene is the most abundant single constituent of coal tar, a volatile product from the destructive distillation of coal, and is also formed in modern processes for the high-temperature cracking (breaking up of large molecules) of petroleum. 1-Methylnaphthalene and 2-methylnaphthalene are naphthalene-related compounds. 1-Methylnaphthalene is a clear liquid and 2-methylnaphthalene is a solid; both can be smelled in air and in water at very low concentrations. 1-Methylnaphthalene and 2-methylnaphthalene are used to make other chemicals such as dyes and resins. 2-Methylnaphthalene is also used to make vitamin K.