Ammonium Nitrate

CAS RN:6484-52-2

Other Preventive Measures

Facilities should be aware of the hazards of ammonium nitrate and ensure that the conditions that may lead to an explosion are not present. Actions that may help to prevent explosions include: (1) Avoid heating ammonium nitrate in a confined space (e.g., processes involving ammonium nitrate should be designed to avoid this possibility). (2) Avoid localized heating of ammonium nitrate, potentially leading to development of high temperature areas. (3) Ensure that ammonium nitrate is not exposed to strong shock waves from explosives. (4) Avoid contamination of ammonium nitrate with combustible materials or organic substances such as oils and waxes. (5) Avoid contamination of ammonium nitrate with inorganic materials that may contribute to its sensitivity to explosion, including chlorides and some metals, such as chromium, copper, cobalt, and nickel. (6) Maintain the pH of ammonium nitrate solutions within the safe operating range of the process. In particular, avoid low pH (acidic) conditions.

Store on clean concrete floors, or on wooden pallets, dunnage or on any type of clean floor. When stored directly on a concrete floor, the floor should be covered first with a moisture insulator such as polyethylene sheet. Bags of ammonium nitrate should be stored not less than 30 inches away from the walls of a storage building. The bags should be stacked, and made accessible, with proper ventilation provided. Stacks should be not more than 8 ft wide and 7 ft high. Where applicable, the bags should be kept at least 36 inches from the eaves and from support beams and rafters overhead. Open flames, sparks and other sources of heat should be kept 50 ft away from storage areas of bags. Smoking within 50 ft of storage areas must be prohibited. Emptied bags should be disposed of promptly and properly.

SRP: The scientific literature for the use of contact lenses by industrial workers is inconsistent. The benefits or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.

If material not on fire and not involved in fire: Keep sparks, flames, and other sources of ignition away. /explosives/

If material not on fire and not involved in fir: Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. /oxidizer and liquid (oxidizer)/

Personnel protection: ... Do not handle broken packages unless wearing appropriate personal protective equipment. Wash away any material which may have contacted the body with copious amounts of water or soap and water. ... Approach fire with caution. /oxidizer and liquid (oxidizer)

Personnel protection: Avoid breathing dusts, and fumes from burning material. /explosives/

Find more information on this substance at: Hazardous Substances Data Bank , TOXMAP , TOXNET , PubMed