LOCATION: EMS_CAT
| Short Description | existing SAS cehmical data file. |
| Created By | specfl.sas. |
| ASCII Input File | (ems_sys)achd.in |
| Filled By | spchdp.sas |
| # | Variable | TYPE | LENGTH | DESCRIPTION |
| 1 | ISRD | Number | 8 | SAROAD code |
| 2 | SRDMW | Number | 8 | Molecular weight of ISRD in g/mole |
| 3 | ISRDNC | Number | 8 | Number of carbon atoms in ISRD |
| 4 | SRDNAM | Character | 30 | Name of ISRD |