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Commonly Used Isotopes & Maximum Allowable Concentration
Use the following tables as a guide for mixed waste minimization:
This is only a list of the most commonly used chemicals if you have any questions call 625-1682 or 624-1604.
Table - Prohibited Chemical Use List
| Chemical Name | Formula | MAC |
|---|---|---|
| Acetone | C3H6O | 0% |
| Acetonitrile | CH3CN | 0% |
| Benzene | C6H6 | 0% |
| Chloroform | CHCl3 | 0% |
| Dichloromethane | CH2Cl2 | 0% |
| Ether | C4H10O | 0% |
| Ethyl Acetate | C4H8O2 | 0% |
| Heptane | C7H16 | 0% |
| Hexane | C6H14 | 0% |
| HPLC | Varies | 0% |
| Isopropanol | C3H8O | 0% |
| Mercury | Hg | 0% |
| Pesticides | Varies | 0% |
| Xylene | C8H14 | 0% |
Generation of a mixed waste with the chemicals listed above Significantly increases the cost of mixed waste disposal. If you cannot avoid use of the chemicals in the table listed above you must contact the RPD and discuss procedures for minimization of mixed waste.
Table III - Maximum Allowable Concentration
| Chemical Name | Formula | MAC |
|---|---|---|
| Acids and Bases | N/A | pH 7-10 |
| Bleach | OclNa | pH 7-10 |
| Ethanol (EtOH) | C2H5OH | 5% |
| Formaldehyde | CH2O | 4% |
| Formalin | CH2O | 4% |
| Formamide | CH3NO | 100% |
| Methanol (MeOH) | CH3OH | 10% |
| Phenol | C6H6O | 50% |
| Polychlorinated biphenyls | PCB'S | <50ppm |
| Sodium Azide | N3Na | 1% |
If you cannot avoid use of the chemicals that are listed in the tables above and have concentrations that are greater than the MAC you must contact the RPD and discuss procedures for minimization of mixed waste
Important: If your chemical concentration is less than the MAC you are required to fill out a Hazardous Waste Manifest.