Density of perchloric acid
| % HClO4 | Density ρ at 15°C (g/cm³) | g HClO4/l | mol HClO4/l |
| 1 | 1,0050 | 10,05 | 0,100 |
| 2 | 1,0109 | 20,22 | 0,201 |
| 4 | 1,0228 | 40,91/td> | 0,407 |
| 6 | 1,0348 | 62,09 | 0,618 |
| 8 | 1,0471 | 83,77 | 0,834 |
| 10 | 1,0597 | 106,0 | 1,055 |
| 12 | 1,0726 | 128,7 | 1,281 |
| 14 | 1,0859 | 152,0 | 1,513 |
| 16 | 1,0995 | 175,9 | 1,751 |
| 18 | 1,1135 | 200,4 | 1,995 |
| 20 | 1,1279 | 225,6 | 2,245 |
| 24 | 1,1581 | 277,9 | 2,767 |
| 28 | 1,1900 | 333,2 | 3,317 |
| 32 | 1,2239 | 391,7 | 3,899 |
| 36 | 1,2603 | 453,7 | 4,516 |
| 40 | 1,2991 | 519,6 | 5,173 |
| 45 | 1,3251 | 608,5 | 6,057 |
| 50 | 1,4103 | 705,2 | 7,019 |
| 55 | 1,4733 | 810,3 | 8,066 |
| 60 | 1,5389 | 923,3 | 9,191 |
| 65 | 1,6059 | 1043,8 | 10,391 |
| 70 | 1,6736 | 1171,5 | 11,662 |