Table 2. Data availability for chemicals used in routine oil and gas development.
Number of chemicals | Proportion of all chemicals | CASRN | Mass data | Toxicity data |
---|---|---|---|---|
151 | 30% | Available | Available | Availablea |
1 | 0% | Available | Unavailable | Availablea |
97 | 18% | Available | Available | Unavailablea |
43 | 8% | Unavailable | Available | Unavailable |
233 | 44% | Unavailable | Unavailable | Unavailable |
aDoes not include EPI Suite computational estimates for green algae ecotoxicity