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Naphthalene CAS#91-20-3
CAS Number: 91-20-3
Chemical Formula: C10H8
Synonyms:
'LGC' (2402)
'LGC' (2603)
TAR CAMPHOR
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Appearance: White Powder
Naphthalene CAS#91-20-3
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 Chemical Properties |
Melting point | 80-82 °C (lit.) |
Boiling point | 218 °C (lit.) |
bulk density | 550-600mg/m3 |
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℃） |
InChI | 1S/C10H8/c1-2-6-10-8-4-3-7-9(10)5-1/h1-8H |
InChIKey | UFWIBTONFRDIAS-UHFFFAOYSA-N |
SMILES | c1ccc2ccccc2c1 |
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 |
OEB | A |
OEL | TWA: 10 ppm (50 mg/m3), STEL: 15 ppm (75 mg/m3) |
WGK Germany | 3 |
RTECS | QJ0525000 |
Autoignition Temperature | 978 °F |
TSCA | TSCA listed |
HazardClass | 4.1 |
PackingGroup | III |
HS Code | 29029010 |
Storage Class | 4.1B - Flammable solid hazardous materials |
Hazard Classifications | Acute Tox. 4 Oral |
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
In addition to oxidation and reduction reactions, naphthalene readily undergoes substitutionreactions such as nitration, halogenation, sulfonation, and acylation to produce a varietyof other substances, which are used in the manufacture of dyes, insecticides, organic solvents,and synthetic resins. The principal use of naphthalene is for the production of phthalic anhydride,C8H4O3.
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