| 500 | 4J994 | NATIONAL REFRIGERANTS INC |
| 500 | 73925 | DU PONT E I DE NEMOURS & CO INC |
| BB-F-1421 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
| FREON | 3A676 | KF OPERATING INC. |
| FREON | 73925 | DU PONT E I DE NEMOURS & CO INC |
| FREON 500 | 73925 | DU PONT E I DE NEMOURS & CO INC |
| FREON 500 REFRIGERANT (DU001075) | 73925 | DU PONT E I DE NEMOURS & CO INC |
| FREON500 | 73925 | DU PONT E I DE NEMOURS & CO INC |
| FREON500REFRIGERAN | 73925 | DU PONT E I DE NEMOURS & CO INC |
| GENETRON (R) 500 AZEOTROPE | 3A676 | KF OPERATING INC. |
| GENETRON(R)500AZE | 3A676 | KF OPERATING INC. |
| NATIONAL REFRIGERANT 500 | 4J994 | NATIONAL REFRIGERANTS INC |
| NATIONALREFRIGERANT | 4J994 | NATIONAL REFRIGERANTS INC |
| RACON 500 | 2A580 | RACON INC POBOX 187 CALVERT CITY KY 420290187 |
| RACON500 | 2A580 | RACON INC POBOX 187 CALVERT CITY KY 420290187 |
| REFRIGERANT | 2A580 | RACON INC POBOX 187 CALVERT CITY KY 420290187 |