Material Safety Data Sheet

            Revision Issued: 1/24/2008          Supersedes: 12/27/2006

            (Sections changed: II, VI, IX, XIV) First Issued: 12/01/85



           Section I - Chemical Product And Company Identification

                    Product Name: Anhydrous Ammonia

        CAS Number: 7664-41-7             HBCC MSDS No. CA10000









1675 No. Main Street, Orange, California 92867

Telephone No: 714-998-8800 | Chemtrec: 800-424-9300





             Section II - Composition/Information On Ingredients



                                                  Exposure Limits (TWAs) in Air

Chemical Name       CAS Number       %     ACGIH TLV     OSHA PEL           STEL

Ammonia             7664-41-7        100 25 ppm          50 ppm             35 ppm

                                           18 mg/m³      35 mg/m³           27 mg/m³

                                                         Cal-OSHA

                                                         25 ppm

                                                         18 mg/m³

                                                         Oregon-OSHA

                                                         25 ppm

                                                         18 mg/m³



                        Section III - Hazard Identification





Summary of Acute Health Hazards

Ingestion: This material is a gas under normal atmospheric conditions and ingestion

is unlikely. Ingestion of liquid ammonia may result in severe irritation or ulceration of

the mouth, throat and digestive tract which may be displayed by nausea, vomiting,

diarrhea and, in severe cases, collapse, shock and death.

Inhalation: Irritation to the mucous membranes of the nose, throat and lungs is

noticeable at 100 ppm. Concentrations above 400 ppm will cause throat irritation

and may destroy mucous surfaces upon prolonged contact. High concentrations can

cause pulmonary edema. Breathing air containing concentrations greater than 5,000

ppm may cause sudden death from spasm or inflammation of the larynx.

Skin: Liquid Ammonia produces severe skin burns on contact. Ammonia gas may

cause skin irritation, especially if skin is moist. The liquid can cause skin damage

resulting from combined freezing and corrosive action on the skin. Atmospheric

concentrations above 30,000 ppm will burn and blister skin after a few seconds of

exposure.





Product Name: Anhydrous Ammonia                                                        1

Eyes: Exposure to high gas concentrations may cause temporary blindness and

severe eye damage. Direct contact of the eyes with liquid ammonia will produce

serious eye burns.

Signs and Symptoms of Exposure: Can cause burning of the eyes, conjunctivitis,

skin irritation, swelling of the eyelids and lips, dry red mouth and tongue, burning in

the throat, and coughing, and in more severe cases of exposure, difficulty in

breathing, signs and symptoms of lung congestion, and, ultimately, death from

respiratory failure due to pulmonary edema may occur.

Effects of Overexposure: Can cause irritation and burns of the skin and mucous

membranes, and headache, salivation, nausea, and vomiting. Difficult or labored

breathing and cough with bloody mucous discharge. Can cause bronchitis, laryngitis,

hemoptysis, and pulmonary edema or pneumonitis. Death may result. Can cause

ulceration of the conjunctiva and cornea, and corneal and lenticular opacities.

Damage to the eyes may be permanent.

Medical Conditions Generally Aggravated by Exposure: Ammonia is a

respiratory irritant. Persons with impaired pulmonary function may be at an

increased risk from exposure. Also pre-existing skin disorders may be aggravated by

exposure.





                          Section IV - First Aid Measures





Ingestion: If this gas is swallowed in liquid form, keep victim warm and OBTAIN

IMMEDIATE MEDICAL ATTENTION. If signs of respiratory obstruction develop,

immediately transport to medical facility. Do not induce vomiting. Never give fluids

or induce vomiting if patient is unconscious or having convulsions.

Inhalation: Remove victim to fresh air. Give oxygen if breathing is difficult. If

breathing has stopped, start artificial respiration. OBTAIN IMMEDIATE MEDICAL

ATTENTION.

Skin: Apply water immediately to exposed areas of skin and continue for at least 30

minutes. Remove contaminated clothing, shoes, and constrictive clothing while

continuing to apply water, being careful not to tear the skin. If skin surface is

damaged, apply a clean dressing. If skin surface is not damaged, cleanse the

affected area(s) thoroughly with mild soap and water. Do not apply salves or

ointments to affected areas. OBTAIN IMMEDIATE MEDICAL ATTENTION.

Eyes: Remove victim to fresh air. Immediately flush with plenty of water for at least

30 minutes with the eyelids held apart. OBTAIN IMMEDIATE MEDICAL ATTENTION.





                        Section V - Fire Fighting Measures





                                        Autoignition Temperature: 651° C;

Flash Point: N/A

                                        1204°F

Lower Explosive Limit: 16% by

                                        Upper Explosive Limit: 25% by Volume

Volume

Unusual Fire and Explosion Hazards: Gas may ignite at vapor concentrations

between 16% and 25% in air. However, ammonia-air mixtures are difficult to ignite

and burn with little vigor. In the absence of oxygen enrichment, the risk of initiating

an accidental fire or explosion is low. Do not allow ammonia vapors to accumulate in

confined areas where ignition may occur. Intense heating particularly in contact with

hot metallic surfaces may cause decomposition of ammonia generating hydrogen, a

flammable gas.





Product Name: Anhydrous Ammonia                                                       2

Extinguishing Media: Use Water Spray or Water Fog, Carbon Dioxide, Polar or

Alcohol Foam, Dry Chemical. Halon may decompose into toxic materials. Carbon

dioxide can displace oxygen. Use caution when applying halon or carbon dioxide in

confined spaces.

Special Firefighting Procedures: Stop flow of gas. Use water fog to keep fire-

exposed containers cool and to protect personnel effecting the shut-off. Wear self-

contained breathing apparatus (SCBA) and encapsulating chemical protective

clothing. Approach fire upwind and evacuate area downwind. Emergency responders

in the danger area should wear bunker gear and self-contained breathing apparatus

for fires beyond the incipient stage (29CFR 1910.156). In addition, wear other

appropriate protective equipment as conditions warrant (See Section VIII). Isolate

damage area, keep unauthorized personnel out. Stop spill/release if it can be done

with minimal risk. If this cannot be done, allow fire to burn. Move undamaged

containers from danger area if it can be done with minimal risk. Stay away from

ends of container. Water spray may be useful in minimizing or dispersing vapors.

Cool equipment exposed to fire with water, if it can be done with minimal risk.





                    Section VI - Accidental Release Measures





Steps To Be Taken In Case Material Is Released Or Spilled: Isolate and

evacuate the leak or spill area immediately for at least 150 feet in all directions. For

larger spills, isolate at least 300 feet in all directions and then evacuate area

downwind at least 0.4 miles in width and at least 0.8 miles in length. Keep area

isolated until gas has dispersed. Note that although ammonia gas is lighter than air,

sudden release may generate an aerosol of liquefied ammonia which may cling to the

ground for long distances. May ignite in the presence of open flames and sparks.

Narrow lower to upper combustion range (16-25%) makes ignition difficult. Keep all

sources of ignition away from spill/release. Do not apply water onto leaking tank.

Stop the flow of gas or liquid. Wear full protective clothing and self-contained

breathing apparatus. Use water to protect personnel effecting the shut-off. Approach

from upwind. Dike liquid spills to contain liquid. Evacuate the area immediately.

Eliminate all open flames in vicinity of indoor spills or released vapor. Water fog can

be used to cleanse atmosphere of ammonia vapor. Downwind areas can be protected

by water fog nozzles positioned downwind.





                       Section VII - Handling and Storage





Contents are under pressure. The use of explosion-proof equipment is recommended

and may be required (see appropriate fire codes). Do not enter confined spaces such

as tanks or pits without following proper entry procedures such as ASTM D-4276.

Protect against physical damage. Outside shaded area or detached storage is

preferred. Inside storage should be in a cool, dry, well ventilated, noncombustible

location, away from all possible sources of ignition. Separate from other chemicals,

particularly oxidizing gases, chlorine, bromine, iodine, and acids. Avoid ingestion,

inhalation, and contact with skin or eyes.









Product Name: Anhydrous Ammonia                                                       3

             Section VIII - Exposure Controls/Personal Protection





Respiratory Protection: Unless ventilation is adequate to keep concentration below

permissible exposure limit (PEL), wear NIOSH approved ammonia chemical cartridge

or canister full facepiece chin-style respirators with an air-purification factor

(APF=50). In emergency or planned entry into unknown concentrations, use self-

contained breathing apparatus (SCBA) or any supplied-air full facepiece chin-style

respirators.

Ventilation: Local exhaust is essential. Spark-proof fans desirable with mechanical

ventilation. Ducts should be located at ceiling level and lead upwards to the outside.

Protective Clothing: Rubber or synthetic chemical gloves and boots should be worn

as well as cotton clothing and underwear. Rubber or synthetic chemical coats or

aprons should be available, an encapsulating chemical protective clothing garment is

desirable for heavy exposures.

Eye Protection: Gas-tight chemical safety goggles must be worn if there is a

likelihood of exposure. Persons subject to ammonia exposure must not wear contact

lenses.

Other Protective Clothing or Equipment: Eyewash fountain and safety shower

should be available in work area. The use of long sleeved clothing closed at the neck

is advised. Change if clothing becomes contaminated.









                    Section IX - Physical and Chemical Properties



Physical State: Compressed Gas                pH: 11.6 for 1.0 N@70°F

                                              Boiling Point/Range: -33.35° C; -

Melting Point/Range: -77.7° C; -107.9°F

                                              28°F

Appearance/Color/Odor: Colorless gas or liquid with extremely pungent odor

                                              Vapor Pressure (mmHg): 6610 @

Solubility in Water: 100%

                                              20° C; 68°F

Specific Gravity (Water=1): 0.68 @ -

                                              Molecular Weight: 17.03

33.4° C; -28°F

Vapor Density (Air=1): 0.6 (gas), >1

                                              % Volatiles: 100%

(aerosol)

Bulk Density: 630 kg/m³; 39.3 lb/ft³;

5.3 Lbs./Gal. (US).



                         Section X - Stability and Reactivity



Stability: Stable          Hazardous Polymerization: Will not occur

Conditions to Avoid: Avoid all possible sources of ignition. Heat will increase

pressure in the storage tank.

Materials to Avoid: Avoid contact with oxidizing gases, chlorine, bromine, mineral

hypochlorite, iodine, halogens, calcium, and strong acids. Avoid contact with copper,

silver, zinc, and alloys of same. Mercury, silver oxide can form explosive compounds.

Hazardous Decomposition Products: Combustion will generate oxides of

nitrogen. Intense heating of the gas, particularly in contact with hot metallic

surfaces, may cause decomposition of ammonia to hydrogen and nitrogen.







Product Name: Anhydrous Ammonia                                                     4

                      Section XI - Toxicological Information



Oral LD50 350 mg/kg Rat       ATSDR 1991

           96 mg/kg    Mouse EPA 1989



                       Section XII - Ecological Information



Inhalation LC50 19,770 ppm F Rat EPA 1989

                14,140 ppm M Rat EPA 1989

                17,401 ppm Rat       ATSDR 1991



                      Section XIII - Disposal Considerations





Consult Federal, State, or Local Authorities for proper disposal procedures. If

possible, allow spilled liquid ammonia to evaporate, as it is too volatile to absorb.

Diking will contain the liquid and allow it to stabilize. Keep unprotected personnel

away from area until it is free of ammonia. Do not apply water directly to ammonia

liquid as this will cause boiling and splattering.





                       Section XIV - Transport Information





Domestic Transportation

DOT Proper Shipping Name: Ammonia, Anhydrous

DOT Hazard Class/I.D. No.: 2.2; UN1005



International Transportation

DOT Proper Shipping Name: Ammonia, Anhydrous

DOT Hazard Class/I.D. No.: 2.3, (8); UN1005









                      Section XV - Regulatory Information

CERCLA Reportable Quantity: 100 Pounds (45.4 Kilograms) (19.43 Gals)

Additional Description Requirement: Inhalation Hazard

NFPA Rating: Health - 3; Flammability - 1; Instability - 0

0=Insignificant 1=Slight 2=Moderate 3=High 4=Extreme

According to the (UFC) Uniform Fire Code Standard 79-3 (2000), the degree of

Hazard is 3-3-0 in a confined space.

EPCRA Section 302 - Ammonia 7664-41-7 � TPQ - 500 Pounds

EPCRA Section 304 RQ � 100 Pounds

EPCRA Section 312 - Ammonia 7664-41-7

EPCRA Section 313 - Ammonia 7664-41-7

CAA 112® TQ � 10,000 Pounds

Ammonia - TSCA Chemical Substance Inventory

IDLH Value*: 300 ppm * The Immediately Dangerous to Life and Health

Value

Carcinogenicity Lists: No NTP: No IARC Monograph: No

OSHA Regulated: Yes









Product Name: Anhydrous Ammonia                                                         5

                         Section XVI - Other Information





Synonyms/Common Names: Anhydrous Ammonia; Ammonia; NH3

Chemical Family/Type: Hydride, (Alkaline Gas), Inorganic Base

Sections changed since last revision: II, VI, IX, XV



IMPORTANT! Read this MSDS before use or disposal of this product. Pass along the

information to employees and any other persons who could be exposed to the

product to be sure that they are aware of the information before use or other

exposure. This MSDS has been prepared according to the OSHA Hazard

Communication Standard [29 CFR 1910.1200]. The MSDS information is based on

sources believed to be reliable. However, since data, safety standards, and

government regulations are subject to change and the conditions of handling and

use, or misuse are beyond our control, Hill Brothers Chemical Company makes no

warranty, either expressed or implied, with respect to the completeness or

continuing accuracy of the information contained herein and disclaims all liability for

reliance thereon. Also, additional information may be necessary or helpful for specific

conditions and circumstances of use. It is the user's responsibility to determine the

suitability of this product and to evaluate risks prior to use, and then to exercise

appropriate precautions for protection of employees and others.









Product Name: Anhydrous Ammonia                                                      6