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Full text of "Medical Jurisprudence And Toxicology"

460

MEDICAL. JURISPRUDENCE

involved.   A case5 is recorded where two "brothers went to the field of a
third brother, and after beating him tied his hands and feet and poured
sulphuric acid into  his  eyes,
thus   causing   grievous   hurt.
> They were sentenced to five
years'   imprisonment   by   the
Sessions Judge of Akalkot.

The treatment consists in
washing the parts immediately
with plenty of water and soap
or sodium or potassium bicar-
bonate, and the burns should
then be treated by applying
magnesium oxide or carbonate
in powder form or as a thick
paste. The raw surface may
afterwards be covered with
tannic acid solution or jelly.

If the eyes are involved,
they should be washed at once
with a large quantity of water,
and should then be irrigated
with a lotion containing 5
grains of sodium bicarbonate
to the ounce of water. A few
drops of castor oil or olive oil
should subsequently be drop-
ped into them.

The face, hands and other
parts of the body may be
burnt accidentally in chemical
laboratories and in manufac-
turing establishments, where
the acid is used.

Fig. 164.—Effects of sulphuric acid thrown over

the face and body.    (From a photograph lent

kindly by Dr. H. -S. Mch,ta.)

NITRIC ACID (AQUA FORTES, RED SPffiET OF NITRE), HNO3 *

Properties.—Pure nitric acid is a clear,  colourless liquid,, giving off ,
colourless fumes when exposed to the air and having a peculiar w.d choking j
odour.   It is a powerful oxidizing agent, and dissolves all the metals except
gold and platinum.   Commercial nitric acid varies in colour from yellow to
deep red from the presence of lower oxides of nitrogen.   Saturated with red
oxides of nitrogen it is generally known as fuming nitric acid.   TtiŁ |>iiarma-
copceial acid contains 70 per cent of nitric acid in water.   The foH^ffeg two ;;
non-official preparations are made from it:—

1.   Acidum nitricum dilutum.—-lt contains 10 per cent by weight of nitric acii* %

Dose, 5 to 20 rmnirrtg.                                          .                                                                         !

2.   Acidum nitro-hydrochloricum dilutum.—lt contains about 1.25 per cent by weight
of nitric acid and 13.5 per cent by weight of hydrochloric acid.   Dose, 5 to 2§ minims.

Special Symptoms.—The lips, tongue and mucous membrane of^tiie
mouth are softened and white at first, and later become intensely
from the formation of xanthoproteic acid.   The teeth ajso become
and the enamel is partially destroyed by the action of the acid,
and clothr which come into direct contact with the acid are _T_     ,,,
TJhese yellow stains turn to orange on lite adc^iticto ojf'J^moi^a14^a

5.   Times of India* June 27,1949, pi 8; V