International Chemical Safety Cards RESORCINOL ICSC: 1033 1,3-Dihydroxybenzene 1,3-Benzenediol 3-Hydroxyphenol Resorcin C6H6O2 Molecular mass: 110.1 ICSC #    1033 CAS #     108-46-3 RTECS # VG9625000 UN #        2876 EC #         604-010-00-1 May 08, 2003 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Water spray, powder. EXPLOSION Prevent build-up of electrostatic charges (e.g., by grounding). EXPOSURE PREVENT DISPERSION OF DUST! STRICT HYGIENE!  •INHALATION Abdominal pain. Blue lips or finger nails. Blue skin. Confusion. Convulsions. Cough. Dizziness. Headache. Nausea. Sore throat. Unconsciousness. Local exhaust or breathing protection. Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.  •SKIN Redness. Pain. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.  •EYES Redness. Pain. Safety goggles, face shield, or eye protection in combination with breathing protection. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION (See Inhalation). Do not eat, drink, or smoke during work. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Give a slurry of activated charcoal in water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. (Extra personal protection: P2 filter respirator for harmful particles). Separated from incompatible materials and food and feedstuffs . See Chemical Dangers. Do not transport with food and feedstuffs. Xn symbol N symbol R: 22-36/38-50 S: 2-26-61 UN Hazard Class: 6.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 1033 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards RESORCINOL ICSC: 1033 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE CRYSTALS . TURNS PINK ON EXPOSURE TO AIR, LIGHT OR ON CONTACT WITH IRON. PHYSICAL DANGERS: As a result of flow, agitation, etc., electrostatic charges can be generated. CHEMICAL DANGERS: Reacts with strong oxidants ammonia and amino compounds causing fire and explosion hazard. OCCUPATIONAL EXPOSURE LIMITS: TLV: 10 ppm as TWA; 20 ppm as STEL; A4; (ACGIH 2003). EU OEL: 10 ppm, 45 mg/m³, as TWA; (EU 2000). OSHA PEL: none NIOSH REL: TWA 10 ppm (45 mg/m3) ST 20 ppm (90 mg/m3) NIOSH IDLH: No data 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 contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C ; on spraying or dispersing, however, much faster. EFFECTS OF SHORT-TERM EXPOSURE: The substance is irritating to the eyes , the skin and the respiratory tract . The substance may cause effects on the blood , resulting in formation of methaemoglobin. The effects may be delayed. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: In rare cases, repeated or prolonged contact may cause skin sensitization. PHYSICAL PROPERTIES Boiling point: 280°C Melting point: 110°C Density: 1.28 g/cm3 Solubility in water, g/100 ml: 140 Vapour pressure, Pa at 20°C: 0.065 Flash point: 127°C c.c. Auto-ignition temperature: 607°C Explosive limits, vol% in air: 1.4-? Octanol/water partition coefficient as log Pow: 0.79-0.93 ENVIRONMENTAL DATA The substance is harmful to aquatic organisms. N O T E S Depending on the degree of exposure, periodic medical examination is indicated. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Do NOT take working clothes home. Transport Emergency Card: TEC (R)-61GT2-III NFPA Code: H; F1; R0 ADDITIONAL INFORMATION ICSC: 1033 RESORCINOL (C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.