Connecticut Administrative Code › Title 21a - Consumer Protection › 235 - Bedding and Upholstered Furniture › Section 21a-235-24 - Fumigation: Insecticides

Current through July 10, 2024
The following substances and processes are approved as
				insecticides for use with formaldehyde or any accepted germicide.
(a)
Ethylene oxide and carbon dioxide:
			 "Carboxide."
A mixture of one part ethylene oxide at ordinary
			 temperatures is a colorless gas with a faint odor of ether. At 50°F. it is
			 a mobile colorless liquid. Concentrated vapors of ethylene oxide are
			 inflammable or explosive. To overcome the fire and explosion hazard, carbon
			 dioxide is added. This eliminates these hazards and about doubles the toxicity
			 of the ethylene oxide gas to insects. Ethylene oxide gas penetrates deeply into
			 articles and materials of bedding and upholstery and destroys insects and
			 insect eggs effectively. It is not very toxic to man. "Carboxide" gas is
			 nonexplosive and noninflammable and does not injure fabrics or furniture. The
			 materials to be treated shall be placed in a gas tight chamber on open lattice
			 racks so as to allow the free access of the gas to the materials. The gas
			 should be released into the chamber in the form of a mist or spray. Three
			 pounds of ethylene oxide-carbon dioxide (or "carboxide") per one thousand cubic
			 feet in a gas tight chamber at a temperature of 75°F. will destroy insects
			 and insect eggs in twelve hours; five pounds per one thousand cubic feet is
			 effective in eight hours.
(b)
Hydrocyanic acid gas.
This gas is very dangerous as it is deadly
			 poisonous to man and should be used only by expert operators, licensed by the
			 local health authorities. (See Reg. 21a-235-29.)
(c)
Methyl formate and carbon dioxides:
			 "Malium."
This is a noninflammable liquid consisting of fifteen parts
			 methyl formate and eighty-five parts carbon dioxide by weight. Have air tight
			 room, except for vent pipe to go above roof. Release gas by connecting cylinder
			 to a manifold outside the room with a discharge pipe to the inside room.
			 Moisture in the room is undesirable. Keep the temperature in room at not less
			 than 75°F. Means shall be provided for exhausting vapors after fumigation.
			 Outlet should be above roof. Clear the room of gas before opening the door
			 after fumigation.
(d)
Ethylene dichloride and carbon tetrachloride.
This is a
			 noninflammable liquid mixture of seventy-five per cent of the former and
			 twenty-five per cent of the latter by volume. Ethylene dichloride is
			 inflammable, but the mixture with carbon tetrachloride is not. Use a gas tight
			 room. Place liquid in a shallow trough not more than two and one-half inches
			 deep. Hang it about eighteen inches below the ceiling. The gas is heavy and
			 travels downward. Use not less than fourteen pounds (five quarts) per one
			 thousand cubic feet of air space in the room. Keep the temperature of room at
			 not less than 75°F. nor more than 90°F. Moisture in the room is
			 undesirable. Means shall be provided for exhausting vapors after fumigation.
			 Outlet should be above the roof. Clear the room of gas before opening the door
			 after fumigation.
(e)
Carbon
			 tetrachloride.
Carbon tetrachloride is a thin, transparent, colorless,
			 noninflammable liquid with an odor like chloroform. It is used as a fire
			 extinguisher. Use an air-tight room equipped with a ventilating pipe which
			 leads to a point above the roof. Have a gas-tight valve in the vent pipe. Place
			 the tetrachloride in an open shallow pan at the top of the room. The gas is
			 heavy and travels downward. The liquid evaporates on exposure to air. Use eight
			 pounds per one thousand cubic feet of room space. Keep the temperature of the
			 room at not less than 75°F. Clear the room of gas before opening the door
			 after fumigation.
(f)
Sulphur
			 dioxide.
This is sulphur fumes. The cheapest and simplest method of
			 producing these fumes is the "pot" method. Use broad, shallow pots to assure
			 rapid production of fumes. Use enough pots so that sulphur may be spread to a
			 thickness of not more than two inches. Provide alcohol to start the sulphur
			 burning. Provide a gas-tight room with fresh air inlet and exhaust pipe to
			 outer air above the roof. Have tight valves in each pipe. Use one pound of
			 sulphur to each one thousand cubic feet of room space. There is danger of fire
			 from burning sulphur. Set the pots on brick or metal supports in a large pan of
			 water. These fumes have a bleaching effect and also will tarnish metal. To
			 light the sulphur quickly, sprinkle with alcohol and throw a lighted match in
			 the pot. Keep the room dry-moisture is undesirable during fumigation. Clear the
			 room of gas after the fumigation period before opening room door.