ILO Home
  

ICSC index [List of Chemicals]  [Risk Notes]  [Risk Phrases]  [Safety Phrases]  [Danger Symbols] Bottom of page (Ctrl-End)
2-NAPHTHOL ICSC: 0719
April 2005
beta-Naphthol
2-Hydroxynaphthalene
2-Naphthalenol
Isonaphthol
PDF for printing Explanation of fields
CAS No: 135-19-3
RTECS No: QL2975000
UN No: 3077
EC No: 604-007-00-5
    C10H8O
Molecular mass: 144.2

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible. NO open flames. Powder, water spray, foam, carbon dioxide.
EXPLOSION Finely dispersed particles form explosive mixtures in air. Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.  
 
EXPOSURE   PREVENT DISPERSION OF DUST!  
Inhalation Cough. Sore throat. Local exhaust or breathing protection. Fresh air, rest.
Skin   Protective gloves. Protective clothing. Rinse and then wash skin with water and soap.
Eyes Redness. Pain. Blurred vision. Safety goggles, or eye protection in combination with breathing protection if powder. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Abdominal pain. Nausea. Vomiting. Diarrhoea. Do not eat, drink, or smoke during work. Rinse mouth. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL PACKAGING & LABELLING
Personal protection: P2 filter respirator for harmful particles. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Do NOT let this chemical enter the environment. Xn Symbol
N Symbol
R: 20/22-50
S: (2-)24/25-61
UN Hazard Class: 9
UN Pack Group: III


EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-90GM7-III
NFPA Code: H; F1; R0
Store in an area without drain or sewer access.

IMPORTANT DATA
Physical State; Appearance
WHITE TO YELLOWISH-WHITE CRYSTALS, WITH CHARACTERISTIC ODOUR.

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air.

Occupational exposure limits
TLV not established.
MAK not established.

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed.

Effects of short-term exposure
The substance is severely irritating to the eyes.

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the kidneys, blood and eyes, resulting in kidney impairment, anaemia and lens opacities.


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 285°C
Melting point: 122°C
Density: 1.28 g/cm³
Solubility in water, g/100 ml at 25°C: 0.074
Vapour pressure, Pa at 25°C: 2
Relative vapour density (air = 1): 5
Flash point: 153°C
Auto-ignition temperature: 550°C
Octanol/water partition coefficient as log Pow: 2.7
The substance is very toxic to aquatic organisms.

NOTES
C.I. Azoic Coupling Component 1, C.I. Developer 5 and C.I. 37500 are trade names.
The substance may be transported in molten state at temperature 135-150°C.

IPCS
International
Programme on
Chemical Safety
WHO ILO UNEP EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.

Top of page (Ctrl-Home) Updated by {ModOper}. Approved by {ModAppr}. Last update: {ModDate}