§ 185.1150 - Combustion product gas.

The food additive combustion product gas may be safely used after harvest in modified atmospheres for stored product insect control on all processed agricultural commodities (except fresh meat) with the following prescribed conditions:

(a) The combustion product gas is produced by the controlled combustion in air of butane, propane, or natural gas. The combustion equipment shall be provided with an absorption type filter capable of removing possible toxic impurities through which all gas used in the treatment of food shall pass and with suitable controls to insure that any combustion products failing to meet the specifications provided will be prevented from reaching the food being treated.

(b) The insecticide meets the following specifications:

(1) Carbon monoxide content not to exceed 4.5 percent by volume.

(2) It is used or intended for use to displace or remove oxygen in the storage of food, except fresh meat.