| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| is nitric acid harmful to human | 1.06 | 0.9 | 1075 | 29 |
| is nitric acid harmful to the environment | 1.88 | 0.2 | 2905 | 46 |
| is nitric acid deadly | 1.27 | 0.6 | 7241 | 93 |
| dangers of nitric acid | 0.25 | 0.7 | 8430 | 76 |
| nitric acid human health effects | 1.39 | 0.7 | 4880 | 93 |
| nitric acid health hazards | 1.34 | 0.7 | 987 | 62 |
| nitric acid effect on humans | 1.15 | 0.4 | 1407 | 10 |
| chemical and health concerns of nitric acid | 1.52 | 1 | 5207 | 51 |
| nitric acid effect on human body | 1.08 | 0.2 | 3447 | 80 |
| is nitric acid safe | 0.41 | 0.3 | 7885 | 71 |
| risks of nitric acid | 0.55 | 0.6 | 6471 | 54 |
| nitric acid human health risk inhalation | 0.88 | 0.4 | 2209 | 14 |
| hazards of nitric acid | 0.63 | 0.6 | 2552 | 7 |
| nitric acid hazard information | 1.29 | 0.9 | 6360 | 77 |
| nitric acid safety hazards | 0.13 | 0.3 | 501 | 36 |
| dangers of nitric acid fumes | 0.14 | 0.2 | 5801 | 1 |
| nitric acid health effects | 0.12 | 0.1 | 3796 | 46 |
| nitric acid and health | 0.71 | 0.6 | 9113 | 59 |
| nitric acid 90% hazards | 1.02 | 0.5 | 4030 | 11 |
