Ammonia, Northeastern Ammonia, Hamler Industries,
Bower Ammonia & Chemical
735 Davisville Road, Third Floor, Southampton, PA
telephone number: 800-643-6226
here for a printable aqua ammonia MSDS
Chemical Name: Ammonium Hydroxide
Solutions (10% to 30%)
CAS Registry No: 1336-21-6
Synonyms: Aqua Ammonia
Chemical Family: Inorganic nitrogen
Formula: NH4OH (NH3
Molecular Weight: 35.05 (NH4OH)
Composition: Solutions: Anhydrous
Ammonia (10% to 30%); Water (90% to 70%); Density:
16° Baumé to 26° Baumé
Ammonia, Anhydrous: CAS # 7664-41-7;
Water: CAS# 7732-18-5
Ammonia is an irritant and corrosive to the skin,
eyes, respiratory tract and mucous membranes. May
cause severe chemical burns to the eyes, lungs and
skin. Skin and respiratory related diseases could
be aggravated by exposure.
• Not recognized by OSHA as a carcinogen
• Not listed in the National Toxicology Program
• Not listed as a carcinogen by the International
Agency for Research on Cancer
|Exposure Limits for Ammonia:
||35 mg / m3 PEL
||8 hour TWA
||27 mg / m3 STEL
|| 15 minutes
|| 18 mg / m3 REL
||10 hour TWA
||18 mg / m3 TLV
||8 hour TWA
||27 mg / m3 STEL
50 (ammonia) (Oral / Rat) 350 mg / kg
Appearance and Odor:
Colorless liquid with a pungent odor
Solubility in Water: Miscible
Specific Gravity of Vapor (air = 1):
0.596 at 32°F
Weight (per gallon): 7.46 pounds
to 7.71 pounds
Evaporation Rate (water = 1): Similar
To see Solution-Specific
Physical Data (Page 2) download the Aqua
Ammonia manual (pdf)
Effects of Overexposure
Eye: Tearing, edema or blindness
may occur. Vapors cause irritation. Effects of direct
contact may range from irritation and lacrimation
to severe injury and blindness.
Skin: Irritation, corrosive burns,
blister formation may result. Contact with liquid
may produce caustic burns.
Inhalation: Acute exposure to vapor
may result in severe irritation of the respiratory
tract, bronchospasm, edema or respiratory arrest.
Ingestion: May cause corrosion to
the esophagus and stomach with perforation and peritonitis.
Extreme exposure may result in death
from spasm, inflammation or edema.
Remove patient to uncontaminated area
Eye: Immediately flush with copious
amounts of tepid water for a minimum of 20 minutes.
Eyelids should be held apart and away from eyeball
for thorough rinsing.
Skin: Immediately flush with copious
amounts of tepid water for a minimum of 20 minutes
while removing contaminated clothing, jewelry and
shoes. Do not rub or apply topical, occlusive compounds,
such as ointments, certain creams, etc., on affected
Inhalation: Immediately remove to
fresh air. If not breathing, administer artificial
respiration. If trained to do so, administer supplemental
oxygen, if required.
Ingestion: If conscious, give large
amounts of water to drink. May drink orange juice,
citrus juice or diluted vinegar (1:4) to counteract
ammonia. If unconscious, do not give anything by mouth.
DO NOT INDUCE VOMITING!
IMMEDIATE MEDICAL HELP FOR ALL EXPOSURES!
Note to Physician
Respiratory injury may appear
as a delayed phenomenon. Pulmonary edema may follow
chemical bronchitis. Supportive treatment with necessary
ventilation actions, including oxygen, may warrant
Flammable Limits in Air: LEL/UEL
16% to 25% (listed in the NIOSH Pocket Guide to
Chemical Hazards 15% to 28%)
Extinguishing Media: Dry Chemical,
CO2, water spray or alcohol-resistant foam
if gas flow cannot be stopped
Auto Ignition Temperature: 1,204°F (If
catalyzed), 1,570°F (If un-catalyzed)
Special Fire-Fighting Procedures
Must wear protective clothing and a positive pressure
SCBA. Stop source if possible. If a portable container
(such as a drum, Intermediate Bulk Container [IBC]
or trailer) can be moved from the fire area without
risk to the individual, do so to prevent the pressure
relief valve from discharging or the container from
failing. Fight fires using dry chemical, carbon dioxide,
water spray or alcohol-resistant foam. Cool fire exposed
containers with water spray. Stay upwind when containers
are threatened. Use water spray to knock down vapor
Unusual Fire and Explosion Hazards
• When heated, product will give off ammonia
vapor, which is a strong irritant to the eye, skin
and respiratory tract.
• Outdoors, ammonia is not generally a fire
hazard. Indoors, in confined areas, ammonia vapors
may be a fire hazard, especially if oil and other
combustible materials are present. Combustion may
form toxic nitrogen oxides.
• If relief valves are inoperative, heat-exposed
storage containers may become explosion hazards due
to over pressurization.
Stable at room temperature. Ammonium Hydroxide will
react exothermically with acids. Will not polymerize.
Ammonia vapors are released when heated.
Conditions to Avoid
• Avoid Ammonium Hydroxide contact with chemicals
such as mercury, chlorine, iodine, bromine, silver
oxide or hypochlorites; they can form explosive compounds.
• Avoid Ammonium Hydroxide contact with chlorine,
which forms a chloramine gas, which is a primary skin
irritant and sensitizer.
• Ammonium Hydroxide has a corrosive reaction
with galvanized surfaces, copper, brass, bronze, aluminum
alloys, mercury, gold and silver.
Hazardous Decomposition Products
Ammonia will be liberated if heated. Hydrogen will
be released on heating ammonia above 450°C (842°F).
Steps to be Taken
Stop source of leak if possible, provided it can be
done in a safe manner. Leave the area of a spill by
moving laterally and upwind. Isolate the affected
area. Non-responders should evacuate the area, or
shelter in place. Only properly trained and equipped
persons should respond to an ammonium hydroxide release.
Wear eye, hand and respiratory protection and protective
clothing; see Protective Equipment.
Stay upwind and use water spray downwind of container
to absorb the evolved gas. Contain spill and runoff
from entering drains, sewers, and water systems by
utilizing methods such as diking, containment, and
Listed as hazardous substance under CWA (40 CFR 116.4
and 40 CFR 117.3). Reportable Quantity 1,000 pounds
(as NH4OH). Classified as hazardous waste
under RCRA (40 CFR 261.22 Corrosive #D002). Comply
with all regulations. Suitably diluted product may
be utilized as fertilizer on agricultural land. Keep
spill from entering streams, lakes, or any water systems.
Respiratory protection approved by NIOSH/MSHA for
ammonia must be used when applicable safety and health
exposure limits are exceeded. For escape in emergencies,
MSHA / NIOSH approved respiratory protection that
consists of a full-face gas mask and canisters approved
for ammonia is required. Refer to 29 CFR 1910.134
and ANSI: Z88.2 for requirements and selection. A
positive pressure SCBA is required for entry into
ammonia atmospheres at or above 300 ppm (IDLH).
Chemical splash goggles should be worn when handling
ammonium hydroxide (aqua ammonia). A face shield can
be worn over chemical splash goggles as additional
protection. Do not wear contact lenses when handling
Local exhaust should be sufficient to keep ammonia
vapor to 25 ppm or less.
• At a minimum, splash proof, chemical safety
goggles, ammonium hydroxide resistant gloves (such
as rubber), and ammonium hydroxide-impervious clothing
should be worn to prevent contact during normal loading,
unloading and transfer operations and handling small
spills. Face shield and boots can be worn as additional
• Respiratory protection approved by NIOSH/MSHA
for ammonia must be used when applicable safety and
health exposure limits are exceeded. For a hazardous
material release response, Level A and/or Level B
ensemble including positive-pressure SCBA should be
used. A positive pressure SCBA is required for entry
into ammonia atmospheres at or above 300 ppm (IDLH).
Refer to 29 CFR 1910.132 through 1910.138 for personal
protective equipment requirements.
Storage and Handling
Only trained persons should handle ammonium hydroxide.
Store in cool, dry and well-ventilated areas, with
containers tightly closed. Keep out of direct sunlight
and away from heat sources. Do not use any non-ferrous
metals such as copper, brass, bronze, aluminum, tin,
zinc or galvanized metals. Protect containers from
physical damage. Closed storage tanks should be provided
with safety relief valves and vacuum breakers as necessary.
Work-Place Protective Equipment
Protective equipment should be stored near, but outside
of ammonium hydroxide area. Water for first aid, such
as an eyewash station and safety shower should be
kept available in the immediate vicinity.
See Waste Disposal. Classified
as RCRA Hazardous Waste due to corrosivity with designation
D002, if disposed of in original form.
Hazard Class: 8 [Corrosive Material]
Proper Shipping Description: Ammonia
Solutions, 8, UN2672, PG III, RQ
Identification No: UN 2672
National Fire Protection Assoc. Hazardous
Rating and Hazardous Materials Identification System
HEALTH = 3
FLAMMABILITY = 1
REACTIVITY = 0
PERSONAL PROTECTION = H
(water = 1)
at 14.7 psia
at 14.7 psia
at 14.7 psia
psia at 60°F
psia at 60°F
psia at 60°F
Under the Comprehensive Environmental Response, Compensation,
and Liability Act of 1980 (CERCLA), Section 103, any
environmental release of this chemical equal to or
over the reportable quantity of 1,000 pounds (as NH4OH)
must be reported promptly to the National Response
Center, Washington, D.C. (1-800-424-8802).
The material is subject
to the reporting requirements of Section 304, Section
312 and Section 313, Title III of the Superfund Amendments
and Reauthorization Act (SARA) of 1986 and 40 CFR
372. Under Section 313, as of June 30, 1995, this
material is reportable with the following qualifications:
10% of total aqueous ammonia is reportable as Ammonia
(CAS #: 7664-41-7) under this listing.
Toxic Substances Control
Act (TSCA): This material and its components are listed
in the TSCA Inventory.
EPA Hazard Categories
- Immediate: Yes; Delayed: No; Fire: No; Sudden Release:
No; Reactive: No.
Clean Air Act –
Section 112(r): Material is listed under EPA’s
Risk Management Program (RMP), 40 CFR Part 68 at concentrations
greater than 20% and storage/process amounts greater
than the Threshold Quantity (TQ) of 20,000 pounds
of contained Ammonia (CAS #: 7664-41-7).
The information, data, and recommendations in this
material safety data sheet relate only to the specific
material designated herein and do not relate to use
in combination with any other material or in any process.
The information, data, and recommendations set forth
herein are believed by us to be accurate. We make
no warranties, either expressed or implied, with respect
thereto and assume no liability in connection with
any use of such information, data, and recommendations.
Prepared By: JRP