Controlling Pressure and Vacuum

TM 5-6640-214-14

(12) Exercise caution when handling a 30 percent, or stronger, solution of hydrogen peroxide, H202 to prevent

its contaminating the skin. If skin is contaminated, immediately wash the area thoroughly with water.

WARNING

Tetraethyl lead is a powerful poison. It can enter the body by inhalation or absorption through

the skin. Tetraethyl lead exposed to sunlight or allowed to evaporate forms triethyl lead, which

is also poisonous. Any open receptacle, container, clothing, or other object in contact with

these materials must be kept clean, or personnel may be subject to serious lead poisoning.

(13) If a strong solution of tetraethyl lead is spilled, cover the spill with dry chloride of lime, CaOC12; wait 5

minutes for reaction to be completed; then flush off with water and wash area with soap and water. If the solution is

spilled on clothing, remove clothing and discard contaminated articles. Do not attempt to wash contaminated clothing for

reuse.

(14) Keep all sample containers that are in use capped or stoppered at all times except when pouring out test

portions. Always replace the same cap or stopper in the container from which it was removed.

(15) Never handle mercury with bare hands; never heat mercury in an open container; and never shake more

than 20 milliliters of mercury in a glass container.

(16) Make certain that a supply of dilute (18%X) acetic acid is available when Doctor test is being performed.

Use the dilute acetic acid freely on any part of the body, except the eyes, that may be contaminated with Doctor or

caustic solution. If Doctor solution or caustic should contaminate the eyes, immediately wash out with water and report to

hospital.

(17) Never taste laboratory chemicals. Smell a chemical only when necessary and then only by wafting a small

amount of vapor with the hand toward the nose.

(18) Dispose of all unlabeled chemicals.

e. Controlling Pressure and Vacuum.

(1) Handle cylinders of compressed gas with particular care. Never allow cylinders to drop or bounce or to

come in contact with fire, sparks, or electrical circuits, as explosions may result. As compressed-gas cylinders are made

of steel, such explosions have the same destructive effect as a bomb burst. Make sure that all stored cylinders are

capped, are supported to prevent rolling or falling, and are stored away from heat.

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