Tales of Kieran: The occupational physician’s odyssey 1—Solvents

2020 ◽  
pp. 18-19
Author(s):  
J.A. Hunter
Keyword(s):  
Occupational Physician ◽  
Dry Cleaning ◽  
Legal Case ◽  
Cleaning Solvents

In Tales of Kieran: The occupational physician’s odyssey 1: Solvents J.A. Hunter briefly explores the humorous encounters with his occupational physician friend Kieran. This article recounts Kieran’s involvement in a legal case about dry-cleaning solvents and dementia.

Use of 1-bromopropane (N-propyl bromide) in dry cleaning is rare and rapidly declining toward obsolescence

2020 ◽  
Vol 4 ◽  
pp. 239784732096696
Author(s):  
Carr J Smith ◽  
Thomas A Perfetti ◽  
Richard G Morford
Keyword(s):  
United States ◽  
New York State ◽  
The United States ◽  
Environmental Conservation ◽  
Air Pollutant ◽  
York State Department ◽  
Urban Air ◽  
Dry Cleaning ◽  
Cleaning Solvents

Ten years ago, the Halogenated Solvents Industry Alliance (HSIA) and the New York State Department of Environmental Conservation petitioned the US Environmental Protection Agency (USEPA) to classify 1-bromopropane (1-BP) as a hazardous air pollutant (HAP), the first such classification of a chemical since 1990. The USEPA plans to classify 1-BP as a HAP. One of the putative exposures supporting HAP classification is 1-BP-based dry cleaning solvents. Only two 1-BP-based dry cleaning solvents have ever been marketed domestically, i.e. the dominant market share product DrySolv® (DrySolv) and less commonly used FabrisolvTM XL (Fabrisolv). The use of 1-BP-based dry cleaning solvents has been declining for several years. Fabrisolv is no longer marketed as a dry cleaning agent. In the first half of 2020, less than 1,600 pounds of DrySolv have been sold for the remaining six dedicated dry cleaning machines still in operation in the United States. It is expected that the number of dedicated DrySolv dry cleaning machines in operation will be reduced to three by the end of 2020. In addition, no 1-BP-based spot cleaner has ever been marketed in the United States. USEPA currently classifies 187 chemicals as HAPs, with a subset of 30 HAPS classified as urban air toxics. Dry cleaning is considered to be one of the 68 “area sources” that contribute to sub-classification of 1-BP as an urban air toxic. In the near future, 1-BP-based products will not be employed in the dry cleaning industry.

Reclaiming Chlorinated Dry Cleaning Solvents and Adsorption

1936 ◽  
Vol 28 (1) ◽  
pp. 22-25 ◽  
Author(s):  
Lawrence Stout ◽  
Arthur Tillman
Keyword(s):  
Dry Cleaning ◽  
Cleaning Solvents

CANADIAN BENTONITES

1938 ◽  
Vol 16b (1) ◽  
pp. 6-34
Author(s):  
Wilfred Gallay
Keyword(s):  
Laboratory Test ◽  
Raw Materials ◽  
Linseed Oil ◽  
Motor Fuel ◽  
Test Methods ◽  
Lubricating Oil ◽  
Dry Cleaning ◽  
Industrial Practice ◽  
Petroleum Distillates ◽  
Cleaning Solvents

A number of Canadian bentonites were investigated as refining and bleaching agents for a variety of industrially important petroleum and fatty oils including the following: lubricating oil distillates, cracked motor fuel distillates; peanut, cottonseed, coconut, and palm oils; lard and beef tallow; linseed oil; pilchard oil; used crank-case oils, insulating oils, and dry cleaning solvents. The raw materials and test methods were chosen to conform to industrial practice. Canadian clays were chiefly from the four western provinces, and comparisons are shown with the results obtained on several imported clays now in use. Several Canadian bentonites show good results in the bleaching of fatty oils and petroleum distillates. Bentonite from the Morden, Manitoba, district possesses unusually high adsorbent power, and in the activated condition its effect on all the raw materials tested is much superior, within the limits of the laboratory test methods employed, to that of all other bentonites examined in this investigation. Optimum methods of activation of these bentonites are discussed. Low silica to alumina ratio and high percentage of combined water are the outstanding characteristics of Morden bentonite, in comparison with adsorbent clays from other sources. Bentonites were not found suitable for use in the vapor phase percolation treatment of cracked distillates.

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