Material Safety Data Sheet - NH3

1. PRODUCT AND COMPANY IDENTIFICATION

Product name : Ammonia

Chemical formula : NH3

Synonyms : Ammonia, Anhydrous

Product Use Description : General Industrial

Product name :                                     Ammonia

Chemical formula :                    NH3

Synonyms :                              Ammonia, Anhydrous

Product Use Description :          General Industrial

Company :                                Special Gas Vietnam JSC

Telephone :                              +84-8-222-03036

Fax :                                          +84-8-222-03038

2. COMPOSITION/INFORMATION ON INGREDIENTS

Concentration is nominal

3. HAZARDS IDENTIFICATION

Emergency Overview

Flammable.

Vapors may form explosive mixture with air.

Immediate fire and explosion hazard exists when mixed with air at concentrations exceeding the lower flammability limit

(LFL).

Wear self-contained breathing apparatus and protective suit.

Direct contact with liquid can cause frostbite.

May react violently with water.

Do not breathe gas.

Corrosive to eyes, respiratory system and skin.

Compressed liquefied gas.

Potential Health Effects

Inhalation : Corrosive to respiratory tract Irritating to respiratory system. Irritating to respiratory system. Can cause severe lung damage. May be fatal if inhaled. Delayed adverse effects possible. Prolonged exposure to small concentrations may result in pulmonary edema. Delayed fatal pulmonary edema possible.

Eye contact :  Causes eye burns. Causes eye irritation. Irritating to eyes. Causes severe eye burns. May cause permanent eye injury.

Skin contact :  Irritating to skin. Contact with liquid may cause cold burns/frostbite. Causes skin irritation. Causes skin burns.

Exposure Guidelines

Primary Routes of Entry : Inhalation

Eye and skin contact.

Target Organs :                         Eyes.

Respiratory tract.

Skin.

Aggravated Medical Condition

Asthma. Skin disorders and Allergies. Eye disease Asthma.

Environmental Effects

Dangerous for the environment.

4. FIRST AID MEASURES

General advice :  Remove victim to uncontaminated area wearing self contained breathing apparatus. Keep victim warm and rested. Call a doctor. Apply artificial respiration if breathing stopped. Use chemically protective clothing.

Eye contact :   Rinse immediately with plenty of water for at least 15 minutes. Keep eye wide open while rinsing. If eye irritation persists, consult a specialist. In the case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Keep eye wide open while rinsing.

Skin contact :  Wash off immediately with plenty of water for at least 20 minutes. Cover wound with sterile dressing. If skin irritation persists, call a physician. Flush with copious amounts of water until treatment is available. Immediate medical treatment is necessary as untreated wounds from corrosion of the skin heal slowly and badly.

Ingestion :   Ingestion is not considered a potential route of exposure.

Inhalation :  Move to fresh air. If symptoms persist, call a physician. Keep patient warm and at rest. Move to fresh air. If breathing has stopped or is labored, give assisted respirations. Supplemental oxygen may be indicated. If the heart has stopped, trained personnel should begin cardiopulmonary resuscitation immediately. Mouth to mouth resuscitation is not recommended. Use a barrier device. If unconscious place in recovery position and seek medical advice. In case of shortness of breath, give oxygen. Consult a doctor.

5. FIRE- FIGHTING MEASURES

Suitable extinguishing media :    All known extinguishing media can be used.

Specific hazards :   Extinguish fire only if gas flow can be stopped. If possible, shut-off source of gas and allow the fire to burn itself out. Downwind personnel must be evacuated. Ammonia can form explosive compounds when combine d with mercury. Upon exposure to intense heat or flame, cylinder will vent rapidly and or rupture violently. Use of water may result in the formation of very toxic aqueous solutions. Move away from container and cool with water from a protected position. Keep adjacent cylinders cool by spraying with large amounts of water until the fire burns itself out. If possible, stop flow of product. Most cylinders are designed to vent contents when exposed to elevated temperatures.

Special protective equipment

for fire-fighters :  In the event of fire, wear self-contained breathing apparatus. Use self-contained breathing apparatus and chemically protective clothing.

Further information:  Use of water may result in the formation of very toxic aqueous solutions., Combustion by-products may be toxic., If flames are accidentally extinguished, explosive re-ignition may occur; therefore, appropriate measures should be taken(e.g. total evacuation to protect persons from cylinder fragments and toxic fumes) should a rupture occur., In the event of fire, cool tanks with water spray .

6. ACCIDENTAL RELEASE MEASURES

Personal precautions :               Remove all sources of ignition. Evacuate personnel to safe areas. Ventilate the area. Approach suspected leak areas with caution. Use self-contained breathing apparatus or positive pressure air line with mask and escape pack in areas where concentration is unknown or above the exposure limits.

Environmental precautions :       Should not be released into the environment. Prevent further leakage or spillage if safe to do so. Prevent from entering sewers, basements and workpits, or any place where its accumulation can be dangerous.

Methods for cleaning up :          Keep area evacuated and free from ignition sources until any spilled liquid has evaporated. (Ground free from frost.) Ventilate the area. Wash contaminated equipment or sites of leaks wit h copious quantities of water. Reduce vapor with fog or fine water spray.

Additional advice :                    If possible, stop flow of product. Increase ventilation to the release area and monitor concentrations. If leak is from cylinder or cylinder valve, call the emergency telephone number. If the leak is in the user's system, close the cylinder valve, safely vent the pressure, and purge with an inert gas before attempting repairs.

7. HANDLING AND STORAGE

Handling

Use equipment rated for cylinder pressure. Cylinders should be stored upright with valve protection cap in place and firmly secured to prevent falling or being knocked over. Protect cylinders from physical damage; do not drag, roll, slide or drop. Do not allow storage area temperature to exceed 50°C (122°F). Only experienced an d properly instructed persons should handle compressed gases/cryogenic liquids. Before using the product, determine its identity by reading the label. Know and understand the properties and hazards of the product before use. When doubt exists as to the correct handling procedure for a particular gas, contact the supplier. Do not remove or deface labels provided by the supplier for the identification of the cylinder contents. When moving cylinders, even for short distances, use a cart (trolley, hand truck, etc.) designed to transport cylinders. Leave valve protection caps in place until the container has been secured against either a wall or bench or placed in a container stand and is ready for use. Use an adjustable strap wrench to remove over-tight or rusted caps. Before connecting the container, check the complete gas system for suitability, particularly for pressure rating and materials. Before connecting the container for use, ensure that back feed from the system into the container is prevented. Ensure

the complete gas system is compatible for pressure rating and materials of construction. Ensure the complete gas system has been checked for leaks before use. Employ suitable pressure regulating devices on all containers when the gas is being emitted to systems with lower pressure rating than that of the container. Never insert an object (e.g. wrench, screwdriver, pry bar, etc.) into valve cap openings. Doing so may damage valve, causing a leak to occur. Open valve slowly. If user experiences any difficulty operating cylinder valve discontinue use and contact supplier. Close container valve after each use and when empty, even if still connected to equipment. Never attempt to repair or modify container valves or safety relief devices. Damaged valves should be reported immediately to the supplier. Close valve after each use and when empty. Replace outlet caps or plugs and container caps as soon as container is disconnected from equipment. Do not subject containers to abnormal mechanical shocks which may cause damage to their valve or safety devices. Never attempt to lift a cylinder by its valve protection cap or guard. Do not use containers as rollers or supports or for any other purpose than to contain the gas as supplied. Never strike an arc on a compressed gas cylinder or make a cylinder a part of an electrical circuit. Keep container valve outlets clean and free from contaminates particularly oil and water. Do not smoke while handling product or cylinders. Never re-compress a gas or a gas mixture without first consulting the supplier. Never attempt to transfer gases from one cylinder/container to another. Always use backflow protective device in piping. Purge air from system before introducing gas. Purge system with dry inert gas (e.g. helium or nitrogen) before gas is introduced and when system is placed out of service. Avoid suckback of water, acid and alkalis. Installation of a cross purge assembly between the cylinder and the regulator is recommended. When returning cylinder install valve outlet cap or plug leak tight. Never use direct flame or electrical heating devices to raise the pressure of a container. Containers should not be subjected to temperatures above 50°C (122°F). Prolon ged periods of cold temperature below -30°C (-20°F) sho uld be avoided. Never attempt to increase liquid withdrawal rate by pressurizing the container without first checking with the supplier. Never permit liquefied gas to become trapped in parts of the system as this may result in hydraulic rupture

Storage

Flammable storage areas should be separated from oxygen and other oxidizers by a minimum distance of 20 ft. (6.1 m.) or by a barrier of non-combustible material at least 5 ft. (1.5 m.) high, having a fire resistance rating of at least 1/2 hour. Post "No Smoking or Open Flames" signs in the storage areas. Open/close valve slowly. Close when not in use. Wear Safety Eye Protection. Check Safety Data Sheet before use. Full containers should be stored so that oldest s tock is used first. Containers should be stored in a purpose build compound which should be well ventilated, preferably in the open air. Observe all regulations and local requirements regarding storage of containers. Stored containers should be periodically checked for general condition and leakage. Local codes may have special requirements for toxic gas storage. Protect containers stored in the open against rusting and extremes of weather. Containers should not be stored in conditions likely to encourage corrosion. Containers should be stored in the vertical position and properly secured to prevent toppling. The container valves should be tightly closed and where appropriate valve outlets should be capped or plugged. Container valve guards or caps should be in place. Keep containers tightly closed in a cool, well-ventilated place. Full and empty cylinders should be segregated. Do not allow storage temperature to exceed 50°C (122°F). Return empty containers in a timely manner.

Technical measures/Precautions

Containers containing flammable gases should be stored away from other combustible materials. Where necessary containers containing oxygen and oxidants should be separated from flammable gases by a fire resistant partition. Provide sufficient air exchange and/or exhaust in work rooms. Containers should be segregated in the storage area according to the various categories (e.g. flammable, toxic, etc.) and in accordance whit local regulations.

8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering measures

Handle product only in closed system or provide appropriate exhaust ventilation at machinery.

Provide natural or explosion-proof ventilation adequate to ensure concentrations are kept below exposure limits. Provide readily accessible eye wash stations and safety showers.

Personal protective equipment

Respiratory protection :             Keep self contained breathing apparatus readily available for emergency use. Use self-contained breathing apparatus or positive pressure air line with mask and escape pack in areas where concentration is unknown or above the exposure limits. Users of breathing apparatus must be trained.

Hand protection :                      Sturdy work gloves are recommended for handling cylinders. The breakthrough time of the selected glove(s) must be greater than the intended use period.

Eye protection :                        Safety glasses recommended when handling cylinders. A full faceshield should be worn in addition to safety glasses when connecting, disconnecting or opening cylinders.

Skin and body protection :        Use chemically protective clothing. Safety shoes are recommended when handling cylinders. Encapsulated chemical protective suit in emergency situations.

Special instructions for

protection and hygiene:             Ensure adequate ventilation, especially in confined areas. Provide good ventilation and/or local exhaust to prevent accumulation of concentrations above exposure limits.

9. PHYSICAL AND CHEMICAL PROPERTIES

Form :                                      Liquefied gas.

Color :                                      Colorless gas

Odor :                                       Ammoniacal

Molecular Weight :                     17.03 g/mol

Relative vapor density :                         0.588 (air = 1)

Relative density :                       0.7 (water = 1)

Vapor pressure             :                       124.73 psia (8.60 bar) at 68 °F (20 °C)

Density :                                   0.044 lb/ft3 (0.0007 g/cm3) at 70 °F (21 °C)

Note: (as vapor)

Specific Volume :                      22.49 ft3/lb (1.4040 m3/kg) at 70 °F (21 °C)

Boiling point/range :                  -28 °F (-33.5 °C)

Critical temperature :                  270 °F (132.3 °C)

Melting point/range :                  -108 °F (-77.7 °C)

Autoignition temperature :          630 °C

Upper flammability limit                         28 %(V)

Lower flammability limit                         15 %(V)

Water solubility                                     Hydrolyses

10. STABILITY AND REACTIVITY

Stability :  Stable under normal conditions.

Conditions to avoid :   Heat, flames and sparks

Materials to avoid :  Copper, silver, cadmium and zinc and their alloys; mercury, tin, acids, alcohols, aldehydes, halogens and oxidizers. Ammonia can form explosive compounds when combined with mercury. May react violently with oxidants. May react violently with acids.Reacts with water to form corrosive alkalis. Overexposure to the atmosphere results in water absorption.

11. TOXICOLOGICAL INFORMATION

Acute Health Hazard

Ingestion :                                 No data is available on the product itself.

Inhalation :                                LC50 (1 h) : 7338 ppm Species : Rat.

Skin. :                                       No data is available on the product itself.

12. ECOLOGICAL INFORMATION

Ecotoxicity effects

Aquatic toxicity :                                   No data is available on the product itself.

Toxicity to other organisms :      No data available.

Persistence and degradability

Mobility :                                  No data available.

Bioaccumulation :                      No data is available on the product itself.

13. DISPOSAL CONSIDERATIONS

Waste from residues / unused products :   In accordance with local and national regulations. Return unused product in original cylinder to supplier. Contact supplier if guidance is required. Must not be discharged to atmosphere.

Contaminated packaging :         Return cylinder to supplier.

14. TRANSPORT INFORMATION

DOT

Proper shipping name :                         Ammonia, anhydrous

Class :                                      2.3

UN/ID No. :                               UN1005

IATA

Transport Forbidden                             

IMDG

Proper shipping name :             AMMONIA, ANHYDROUS

Class :                                      2.3

UN/ID No. :                               UN1005

TDG

Proper shipping name :             AMMONIA, ANHYDROUS

Class :                                      2.3

UN/ID No. :                               UN1005

Further Information

Avoid transport on vehicles where the load space is not separated from the driver's compartment. Ensure vehicle driver is aware of the potential hazards of the load and knows what to do in the event of an accident or an emergency. The transportation information is not intended to convey all specific regulatory data relating to this material. For complete transportation information, contact an Air Products customer service representative.

15. OTHER INFORMATION

NFPA Rating

Health :                         3

Fire :                             1

Instability :                    0

HMIS Rating

Health :                         3

Flammability :              1

Physical hazard :        2