Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 23 - LAUNDERING AND DYEING ESTABLISHMENTS
Subchapter B - DRYCLEANING AND DYEING
GENERAL BUILDING CLASSIFICATIONS
Section 23.81 - Classification
Current through Register Vol. 54, No. 38, September 21, 2024
Buildings enumerated in sections 4-8 of the Dry Cleaning and Dyeing Law (35 P. S. §§ 1269.4-1269.8) shall be classified as follows:
(1) Class I. The buildings in this class use class I solvent which is a flammable petroleum solvent having the following properties:
| Flash point (closed cup tester) | Lower than 100 °F. |
(2) Class II. The buildings in this class use class II solvent which is a flammable petroleum solvent having the following properties:
| Flash point (closed cup tester) | Lower than 138.2° F. but higher than 99° F. |
| Initial boiling point | Lower than 357.8° F. but higher than 300° F. |
| Ignition temperature | Lower than 453.2° F. but higher than 400° F. |
| Power limit of explosive range | Not less than 1.1% by volume of air. |
| Spontaneous heating | The solvent shall not heat spontaneously. |
(3) Class III. The buildings in this class use class III solvent which is a flammable petroleum solvent having the following properties:
| Flash point (closed cup tester) | Not lower than 138.2° F. |
| Initial boiling point | Not lower than 357.8° F. |
| Ignition temperature | Not lower than 453.2° F. |
| Power limit of explosive range | Not less than 0.8% by volume in air at an initial temperature of 302° F. |
| Spontaneous heating | The solvent shall not heat spontaneously. |
(4) Class IV. The buildings in this class use Class IV solvent which is a commercially nonaqueous liquid solvent that is volatile but does not contain flash point ingredients and which is neither a Class I, Class II nor a Class III solvent.
