if any of the following chemicals
DPD (Diethyl-P-Phenylene Diamine)
Wide Range pH Indicator Solution
Nesslers Reagent APHA
Sodium Hydroxide Standard Solution
Chloride Titrant (Silver Nitrate)
Phenolphthalein Indicator Solution
Maganese Sulfate Solution
Sodium Thiosulfate Solution
Standard Barium Chloride Reagent
Reagent K (Acetone and Zylenes)
Refer to the specific Step-By-Step
instructions relative to accidents
as defined in paragraphs covering each specific chemical.
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 waters corrosive-
The acidity of natural water in normally very low unless
strongly acidic industrial water has been introduced.
Water is very
(a) Acidity is caused by carbon dioxide dissolved in water, or
tannic acid, or hydrolyzing inorganic salts such as ferrous and/or
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
These two classes of acidity may be determined