Hand protection.Materials handling

Observe normal precautions appropriate to the circumstances and quantity of material handled. Excessive dust generation should be avoided when using powders, and an appropriate ventilation area and dust mask are recommended. Hand and eye protection is also recommended. The A, ES, and MS copolymers are extremely irritating to the eyes and a NIOSH-approved respirator and suitable eye protection are recommended when using Gantrez ES-435, Gantrez ES-225, and Gantrez A-425. 

Particles produced in the gas phase must be trapped in condensed media, such as on solid substrates or in liquids, in order to accumulate, stock, and handle them. The surface of newly formed metallic fine particles is very active and is impossible to keep clean in an ambient condition, including gold. The surface must be stabilized by virtue of appropriate surface stabilizers or passivated with controlled surface chemical reaction or protected by inert materials. Low-temperature technique is also applied to depress surface activity. Many nanoparticles are stabilized in a solid matrix such as an inert gas at cryogenic temperature. At the laboratory scale, there are many reports on physical properties of nanometer-sized metallic particles measured at low temperature. However, we have difficulty in handling particles if they are in a solid matrix or on a solid substrate, especially at cryogenic temperature. On the other hand, a dispersion system in fluids is good for handling, characterization, and advanced treatment of particles if the particles are stabilized. 

Please be advised that all chemicals should be considered hazardous and should be handled in a hood and with proper personal protective equipment (lab coat, proper gloves, approved safety glasses, and/or goggles). Avoid inhaling vapors and/or aerosolized materials. Avoid skin/eye contact with all chemicals at all times. Wash hands frequently. See the instructor if you have any questions or concerns. 

The compositions are very sensitive, but the charge is much smaller than in detonators, and consequently they can be handled without serious risk. It is usually necessary to extract the charges of several caps to obtain enough material lor the tesu. The hands should be protected by heavy gloves or doth. 

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