|
C H E M I C A L F A C T S H E E T f o r e m e r g e n c y r e s p o n d e r s
|
CHEMICAL: Ammonia Anhydrous
| NH3 |
1005 |
7664-41-7 |
125 |
Yes |
Yes |
100# |
3 |
1 |
0 |
Chemical
Formula |
UN # |
C.A.S. # |
ERG . # |
Hazardous
Substance |
Extremely Hazardous
Substance |
RQ |
Health |
Fire |
Reactivity |
| Characteristics |
Exposure Limits |
|
Common Uses |
| Appearance: |
Colorless; Pungent gas with suffocating Odor |
LEL: |
16% |
- In chemical Industry, especially fertilizer manufacturing
- Nitric Acids and explosives manufacturing
- Refrigerant in food processing and storage
- Building block in many chemicals such as cleaning fluids and synthetic fibers
|
| |
|
UEL: |
25% |
| Specific Gravity: |
0.68 |
IDLH: |
500ppm |
| Flash Point: |
NA |
STEL: |
35ppm |
| Auto Ignit.: |
1204øF |
PEL: |
25ppm* |
| Vapor Pressure: |
8.5atm |
ERPG2: |
200ppm |
| pH: |
10.6-11.6 |
ERPG3: |
1000ppm |
|
| Emergency Response PPE (Fire Fighters) |
|
Hazards |
Respiratory: Use Full Face chemical cartridge respirator (GMD) for exposures up to 250ppm;
SCBA or airline respirator with escape pack for >250ppm (IDLH is 300ppm) |
- Vapors are extremely irritating and corrosive to eyes, nose, throat and lungs
- Ammonia gas can combine with perspiration on the skin to form a caustic solution which attacks the skin
- DOT Hazard Classification 2.2 Non-flammable gas
- Does not readilu ignite, but may burn or explode if mixed with air.
|
| Eye/Face/Body: Chemical protective clothing. Use structural fire fighting PPE for fire situation only, it is not effective in spill situations.
|
|
| Emergency Medical Actions |
|
Incompatible |
- Remove contaminated clothing and/or articles.
- Respiratory assistance/CPR as needed.
- Flush with copious amounts of water for 15 minutes.
- If concious, give water, do not induce vomiting.
- Neutralizing agent = citrus fruit or diluted vinegar
- Skin contact with liquid NH3 must be thawed.
|
- Strong Oxidizers
- Halogens
- Acids
- Silver/Zinc Salts
- Mercury / chlorine / bromine
|
|
| Notes |
|
Initial and Protective Action Distances |
- Vapors from liqueified gas will initially collect in low areas
- Ammonia is not normally considered a serious or life-threatening hazard, as its odor is irritating and in large amounts intolerable causing people to seek relief.
- Danger is when people are unable to leave the area as in a confined space
- *OSHA PEL is 50ppm but NIOSH TLV is 25ppm
|
Small Spills <>
- Initial Isolation 100'
- Protect downwind
- >1/10 mile (day), 1/5 mile (night)
|
Large Spills <>
- Initial Isolation 300'
- Protect downwind
- >1/5 mile (day), 1/2 mile (night)
|
| Emergency Response Actions |
- Stay away from ends of containers - they may rupture if exposed to heat
- Do not get water inside container or onto large quantity of ammonia due to hydrochloric acid formation.
- Small fire: dry-chem., CO2. Large fire: Regular foam or fine water spray. Fight fire from a maximum distance-use monitors in large tank.
- Fires- Stop flow of gas before extinquishing the fire
- Tank, railcar or truck fire- isloate 1 mile in all directions and prevent runoff from entering sewers. 1/99
|
|