International Chemical Safety Cards 2-AMINOPHENOL ICSC: 0824 2-Amino-1-hydroxybenzene o-Hydroxyaniline o-Aminophenol C6H7NO / C6H4(OH)(NH2) Molecular mass: 109.1 ICSC #    0824 CAS #     95-55-6 RTECS # SJ4950000 UN #        2512 EC #         612-033-00-3 October 20, 2005 Validated TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. Alcohol-resistant foam. Carbon dioxide. Water spray, powder. EXPLOSION EXPOSURE STRICT HYGIENE!  •INHALATION See Ingestion. Local exhaust or breathing protection. Fresh air, rest. Refer for medical attention.  •SKIN MAY BE ABSORBED! Protective gloves. Protective clothing. Rinse and then wash skin with water and soap.  •EYES Redness. Safety goggles . First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Blue lips or finger nails. Blue skin. Confusion. Convulsions. Cough. Dizziness. Headache. Laboured breathing. Nausea. Unconsciousness. Symptoms may be delayed (see Notes). Do not eat, drink, or smoke during work. Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: P3 filter respirator for toxic particles. Chemical protection suit. Do NOT let this chemical enter the environment. Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Store in an area without drain or sewer access. Well closed. Separated from oxidants , food and feedstuffs . Do not transport with food and feedstuffs. Xn symbol R: 20/22-68 S: 2-28-36/37 UN Hazard Class: 6.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 0824 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 2-AMINOPHENOL ICSC: 0824 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS TO WHITE CRYSTALS . TURNS DARK ON EXPOSURE TO AIR OR LIGHT. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating producing toxic fumes ( nitrogen oxides ). Reacts violently with oxidants causing fire and explosion hazard. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by ingestion, through the skin and by inhalation of its aerosol. INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered. EFFECTS OF SHORT-TERM EXPOSURE: The substance may cause effects on the blood , resulting in the formation of methaemoglobin. The effects may be delayed. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact may cause skin sensitization. PHYSICAL PROPERTIES Melting point (decomposes): 170-174°C Density: 1.3 g/cm³ Solubility in water, g/100 ml at 20°C: 1.7 Vapour pressure, Pa at °C: negligible Relative vapour density (air = 1): 3.77 Flash point: >175°C c.c. Auto-ignition temperature: 190°C Octanol/water partition coefficient as log Pow: 0.62 ENVIRONMENTAL DATA This substance may be hazardous in the environment; special attention should be given to aquatic organisms. N O T E S Depending on the degree of exposure, periodic medical examination is suggested. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Transport Emergency Card: TEC (R)-61GT2-III NFPA Code: H2; F1; R2; ADDITIONAL INFORMATION ICSC: 0824 2-AMINOPHENOL (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.