Food or edible material: processes – compositions – and products – Product with added inedible feature other than that which... – Feature is casing
Patent
1989-01-17
1989-08-22
Richman, Barry S.
Food or edible material: processes, compositions, and products
Product with added inedible feature other than that which...
Feature is casing
427384, 427395, 436166, G01N 3300
Patent
active
048596078
ABSTRACT:
3-Methyl-2-benzothiazolinone acetone azine and 2-phenylphenol in 1:4 molar solid mixture reacts specifically with ozone at concentrations of environmental interest to produce a red-violet color. The response is proportional, but not rectilinearly, to ozone concentration at constant exposure time and to time of exposure at constant ozone concentration. The reagent is intended for use with visual comparison standards in passive monitoring devices. No interference was observed from atmospheric oxygen, nitrogen dioxide, sulfur dioxide, or bromine or iodine vapor. Chlorine produced a light yellow color.
REFERENCES:
patent: 3397966 (1968-08-01), Plantz
patent: 4260679 (1981-04-01), Tsudal et al.
patent: 4820632 (1989-04-01), Frey et al.
Lambert, J. L.; Paukstells, J. V.; "3-Methyl-2-benzothiazolinone Acetone Azine with 2-Phenylphenol as a Solid Passive Monitoring Reagent for Ozone", Environ. Sci. Technol., 1989, vol. 23, No. 2, pp. 241-243.
Chiang Yuan C.
Lambert Jack L.
Paukstelis Joseph V.
Fruchter Marcella Iris
Kansas State University Research Foundation
Richman Barry S.
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