Hand Protection
Persons handling materials or
equipment which is likely to puncture, cut, abrade or irritate hands or
arms, shall wear suitable gloves (i.e. leather, Kevlar®) which will
provide adequate protection from such injury.
The type of
gloves used shall be appropriate to the hazard to which the worker is
exposed and provide an adequate level of protection.
Persons
handling chemical substances which may be absorbed through the skin
shall wear hand protection made of a suitable synthetic material, which
is appropriate for protection from the substance being handled. Unlined
synthetic gloves are preferred, since they are easier to clean and
there is less tendency for the lining to become contaminated. No
synthetic protective coating is completely chemically resistant. The
resistance of the particular item depends on the thickness of the
coating, the method of manufacture, combinations of other coatings,
etc. When synthetic gloves are exposed to chemical substances, the
amount of protection depends greatly on the substance being handled.
Once the chemical substance has contaminated the inside of the glove,
caused the deterioration of the material or otherwise penetrated the
glove, it must be replaced immediately. Some applications will require
the use of more than one type of synthetic glove in order to provide
adequate protection.
The following table provides some
general guidelines for use of different synthetic gloves, but it is not
a complete list. The Occupational Health and Safety Department should
be consulted to ensure that the correct type of glove is being used.
Table 1. Some Properties of Synthetic Materials
(LIST IS NOT COMPLETE)
| Glove Material |
Characteristics Tear/Abrasion Resistance |
| Butyl Rubber |
Limited
chemical resistance to certain emulsifiable concentrate solvents and
some pesticides. Can provide adequate protection against formaldehyde,
creosote, and mild acids. Ideal for use with ketones (MEK and acetone)
and esters (amyl acetate and ethyl acetate).
Reasonable |
Natural Rubber (Latex) |
Good
resistance to mild acids and some pesticides. Poor resistance to most
organic or petroleum solvents and creosote. Good for protection from
biohazards.
Good, but deteriorates in sunlight. |
| Neoprene Rubber |
Good resistance to wood preservatives and hydrocarbon solvents. Not very resistant to solvents such as xylene or acetone.
Good for abrasion and sunlight |
Nitrile Rubber
(11 mil thickness) |
Provides
substantial protection against formaldehyde, some wood preservatives,
some acidic pesticides. Good alternative for neoprene, natural rubber
or unsupported vinyl gloves.
Good, but deteriorates in sunlight |
| Polyethylene |
Relatively
good protection against formaldehyde, isopropyl alcohol, weak acids,
and light oils. Not good protection against strong acids or most
solvents.
Relatively poor |
Polyvinyl Alcohol (PVA) |
Excellent resistance against many solvents. Deteriorates in the presence of water.
Relatively stiff with low puncture and abrasion resistance. |
Polyvinyl Chloride (PVC) |
Good
resistance to oils and petroleum products, also photographic
developers. Not resistant to solvents such as xylene and acetone or
acids.
Relatively good |
Viton® (9 mil thickness) |
Made
specifically for handling chlorinated and aromatic solvents. Superior
resistance to PCB's. Cannot be used for aldehydes. Applications include
automotive / aircraft and chemical industries. Good |
Norfoil® (Silver Shield) (4 mil thickness) |
A
lightweight, flexible laminate which resists permeation and
breakthrough by an array of toxic/hazardous chemicals. Excellent choice
for chemical and petrochemical laboratories, spill cleanups, hazmat
operations, photo finishing and medical laboratories.
Good |