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HNS MARITIME SAFETY DATA SHEET FILE NO.: 004 DATE: 09/03/2010 METHYL AMINE GAS DISSOLVER HUMAN HEALTH CONSIDERATIONS – See Section 3 to 6 ERG 2008 Table 1: Initial isolation and protective action distances Chemical Name Spill Size Definition Isolation Zone in DownWind Protection Zone all directions If Fire No Fire Methylamine Raw Gas Flammable Gas. 100 800 1600 All directions Aqueous Solution Flammable Liquid. 50 800 800 All directions Isolation Distance: All personnel to be directed in a cross wind direction this distance from the spill Protective Action Zone: A square area down wind of the spill where protective action should be considered, starting with nearest receptors and working away from spill. Such estimates should always be regarded with reservations and never be alternatives for monitoring. Acute Health Hazards ppm mg m -3 Signs and symptoms 0 - 10 0 – 12.7 No observed effect 5 - 25 6.4 – 32 Slight visual disturbance 10 - 100 12.7 - 127 Transient mucous membrane irritation 100 127 Immediately dangerous to life or health (NIOSH) Monitoring Strategy (Short & Long Term) & Equipment – See Section 6 Health and Safety Environmental Public Health Air - Real-time photionisation detection or quantitative colour change tubes (Draeger or similar). Monitors MUST be intrinsically safe / ATEX compliant. Monitor Oxygen in confined spaces Atmospheric fate and transport e.g. Aloha (immediate risk / first response), Calpuff (longer term) GP referrals, hospital admissions – numbers, symptomology, follow-up studies. (See Biomarkers) OPERATIONAL EMERGENCY RESPONSE – See Section 8 & 9 Fire fighting measures: Decontamination of responders Response & Clean up: Waste Management Use fine water spray for gas clouds. Use water to cool tanks, cylinders etc. Use CO 2 or foam against small fires. May form toxic gases during combustion - Nitrogen Oxides Decontamination should be performed using local protocols in designated areas with adequate ventilation. Water should be contained and disposed of at an appropriate waste facility. Decontamination run-off should be prevented from entering drains and watercourses.Ventilate confined spaces. Absorb liquids and dispose accordingly. Dispose as hazardous waste. Methylamine gas is volatile and non persistent. Solutions will be biodegraded in the environment. Controlled incineration is suitable for contaminated materials.. EMERGENCY CONTACTS ORGANISATION TELEPHONE FIRE, AMBULANCE, POLICE 999 HEALTH PROTECTION AGENCY: Chemical Hazards Unit 08448 920555 ENVIRONMENT AGENCY: 24/7 Pollution 0800 807060 PAGE 2 OF 11 Summary Page
HNS MARITIME SAFETY DATA SHEET FILE NO.: 004 DATE: 09/03/2011 METHYL AMINE SECTION 1: IDENTIFICATION CAS No: 74-89-5 UN No:1061 T – Toxic, Xn – Harmful, C - Corrosive F+ - Extremely Flammable R12 R20, R34 R37/38, R41 S9, S16, S26, S36, S39 GAS DISSOLVER NAME: METHYLAMINE CHEMICAL FORMULA: CH 3 NH 2 SYNONYMS: MMA, Methanamine, Aminomethane CAS No: 74-89-5 UN No: 1061* EINECS : 200-820-0 CLASSIFICATIONS RISK PHRASES SAFETY PHRASES USES: T – Toxic, Xn – Harmful, F+ – Extremely Flammable, C - Corrosive R12 Extremely Flammable R20 Toxic by inhalation R34 Causes burns R37/38 Irritating to eyes, respiratory system and skin R41 Risk of serious damage to eyes S9 In case of accident or if you feel unwell seek medical advice immediately. Dispose of as hazardous waste S16 Avoid exposure - obtain special instructions before use. S26 Avoid exposure - obtain special instructions before use. S36 Avoid exposure - obtain special instructions before use. S39 Avoid exposure - obtain special instructions before use. Primary uses in manufacture of pharmaceuticals, household cleaners, pesticides and solvents. Trade data for ethylene oxide indicate annual production capacity in the UK in 2007 in the order of 15,000 tonnes of methylamines including di and tri derivatives and in the order of 40,000 tonnes for US 2005 trade data. Methylamine is typically transported in pressurized cylinders or tanks. The gas condenses at temperatures below -6 o C. *(UN NO for aqueous solution – 1235) SECTION 2: PHYSICAL CHEMICAL PROPERTIES SEBC CLASSIFICATION G D GAS DISSOLVER BOILING POINT -6.3 deg C APPEARANCE Colourless gas VAPOUR PRESSURE 353 kPa at 20 °C ODOUR Fish-like (ammonia >100ppm) SPECIFIC GRAVITY(air = 1): 1.08 at 20 °C FLAMMABILITY Extremely Flammable SOLUBILITY IN WATER Soluble (will evaporate from water) STABILITY & REACTIVITY Reacts violently with acids, oxidizing agents and nitromethane. Corrosive to some copper, zinc, aluminium and galvanized materials. Aqueous solutions are basic. Aqueous oxidation may form azoxymethane which is a mammalian carcinogen. PAGE 3 OF 11
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