WARNING
TM 5-6630-215-12
Induce Vomiting
if any of the following chemicals
are ingested:
Isopropyl Alcohol
DPD (Diethyl-P-Phenylene Diamine)
Wide Range pH Indicator Solution
Arsenite Solution
Nessler’s Reagent APHA
Sulfaver IV
Sodium Hydroxide Standard Solution
Chloride Titrant (Silver Nitrate)
Phenolphthalein Indicator Solution
Maganese Sulfate Solution
Sodium Thiosulfate Solution
Zinc Reagent
Standard Barium Chloride Reagent
Reagent “K” (Acetone and Zylenes)
Important
Refer to the specific “Step-By-Step”
instructions relative to accidents
as defined in paragraphs covering each specific chemical.
a.
Acidity Test Kit (fig. 2-5).
(1) Acidity is a method of expressing the capacity of water to
donate hydrogen ions and gives an indication of the water’s corrosive-
ness.
The acidity of natural water in normally very low unless
strongly acidic industrial water has been introduced.
Water is very
weak acid.
(a) Acidity is caused by carbon dioxide dissolved in water, or
tannic acid, or hydrolyzing inorganic salts such as ferrous and/or
aluminum sulfate.
The presence of mineral acids such as hydrochloric
or sulfuric acids from industrial wastes may contibute acidity (paras
2-19f and 2-2 d).
(b) Acidity is classified as methyl orange or “free” acidity,
which is made up of strong mineral acids such as hydrochloric and
sulfuric acids, and phenolphthalein; or “total” acidity, which is the
methyl orange acidity plus weak acids such as carbon dioxide, and
organic acids.
These two classes of acidity may be determined
separately.
2-17
