File:Generating nitrous oxide;Dental review (1901).jpg

Identifier: dentalreviewdevo1519unse (find matches)
Title: Dental review; devoted to the advancement of dentistry.
Year: 1901 (1900s)
Authors:
Subjects: Dentistry
Publisher: Chicago, Dental review company 1887-(1918)
Contributing Library: Columbia University Libraries
Digitizing Sponsor: National Endowment for the Humanities (NEH)

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l a little safer and think the qual-ity of the gas a little better if run at a lower degree of heat, saythirty to forty gallons per hour. We have here a retort made frompure flint glass highly tempered. Into this retort we put about fivepounds of granulated nitrate of ammonia. One pound of the nitratewill make from twenty-five to thirty gallons of gas. After fillingthe retort we apply the heat in direct contact with the retort, usingno sand bath ; at first with as low a flame as the burner will admitand gradually turning on more heat from time to time until the fullflow of gas is burning. With this intense heat the nitrate becomesa liquid in from thirty to- forty minutes, reaches the boiling point afew minutes later, when the heat must be reduced to a degree suffi-cient only to keep it boiling until the gasometer is full or the retortbecomes dry. Should there be any of the liquid remaining in theretort after turning off the heat, it becomes a solid cake of fused 216 THE DENTAL REVIEW.
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ORIGINAL COMMUNICATIONS. 217 nitrate and is left remaining in the retort until we again wish togenerate gas, when we add a sufficient quantity of the salts to makethe desired amount of gas. In generating Nitrons Oxide there isalways a small quantity of water and chlorine given off and here wehave bottle No. i to catch the drip which comes over drop by drop.This bottle fills with drip while generating from 1,000 to 1,200gallons of gas. I empty it about once a week. In Nos. 2, 3 and 4we have about one gallon of water in each bottle through which thegas washes as it is conveyed from one to the other by means of along and short glass tube. These glass tubes are held firmly in placeand the bottle made gas tight by heavy rubber corks. The long tubeshould be perforated with three small holes about one-half inch fromthe end in order to divide the gas into three small bubbles instead ofpassing out of the end in one large bubble, for the greater the numberof bubbles the more thorough the washin

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