8.20846 EMD Millipore


Naphthalene for synthesis. CAS 91-20-3, molar mass 128.17 g/mol., for synthesis

  • CAS Number 91-20-3

  • Linear Formula C₁₀H₈

  • Molecular Weight 128.17 g/mol

  •  EC Number 202-049-5



Related Categories Biochemicals and Reagents More...
packaging   100 g in Plastic bottle (8208460100)
bp   218 °C (1013 hPa)
expl. lim.     0.9 - 5.9 %(V)
vapor pressure   0.072 hPa (20 °C)
solubility   >=0.038 g/l slightly soluble
density   1.085 g/cm3 (20 °C)
flash point   79 °C
autoignition temp.   540 °C
mp   79 - 82 °C
bulk density   550 - 600 mg/m³
LD 50 dermal   LD50 Rat > 2500 mg/kg
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (GC, area%): ≥ 99.0 % (a/a)
  Melting range (lower value): ≥ 79 °C
  Melting range (upper value): ≤ 82 °C
  Identity (IR): passes test

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Safety Information

HS Code 
2902 90 00
Hazard Statement(s) 
H228: Flammable solid.
H302: Harmful if swallowed.
H351: Suspected of causing cancer.
H410: Very toxic to aquatic life with long lasting effects.
Precautionary Statement(s) 
P210: Keep away from heat.
P273: Avoid release to the environment.
P308 + P313: IF exposed or concerned: Get medical advice/ attention.
P370 + P378: In case of fire: Use sand for extinction.
Storage class 
4.1B Flammable solid hazardous materials
WGK 3 highly water endangering
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Pictogram(s) 
GHS07  GHS07
Hazard Pictogram(s) 
GHS08  GHS08
Hazard Pictogram(s) 
GHS09  GHS09
Hazard Symbols 
Dangerous for the environment  Dangerous for the environment
Hazard Symbols 
Harmful  Harmful
Declaration (railroad and road) ADR, RID 
UN 1334 , 4.1, III
Declaration (transport by air) IATA-DGR 
UN 1334 , 4.1, III
Declaration (transport by sea) IMDG-Code 
UN 1334 , 4.1, III, Marine Pollutant: P
Categories of danger 
harmful, carcinogenic, dangerous for the environment
R Phrase 
R 22-40-50/53
Harmful if swallowed.Limited evidence of a carcinogenic effect.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase 
S 36/37-46-60-61
Wear suitable protective clothing and gloves.If swallowed, seek medical advice immediately and show this container or label.This material and its container must be disposed of as hazardous waste.Avoid release to the environment. Refer to special instructions/ Safety data sheets.
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