| ↑ | 541 | physical chemistry |   → 660.29 ≈ 60A |   |
| ↑ | 541.042 | matter state chemistry, solid state | | |
| ↑ | 541.2 | theoretic chemistry | | |
| ↑ | 541.22 | molecular structure | ≈ 60B | |
| ↑ | 541.220 | formulas, specifications | | |
| ↑ | 541.223 | stereochemistry | | |
| ↑ | 541.224 | chemical bonds, valency, radicals | | |
| ↑ | 541.2242 | coordination compounds, blenders | | |
| ↑ | 541.26 | stoichiometry | | |
| ↑ | 541.28 | quantum chemistry | | |
| ↑ | 541.3 | various subects in physical chemistry | | |
| ↑ | 541.33 | surface chemistry, adsorption, adhesion | | |
| ↑ | 541.34 | chemistry of solutions, colloids | | |
| ↑ | 541.345 | colloid chemistry | ≈ 59H | |
| ↑ | 541.348 | solvents | | |
| ↑ | 541.35 | photochemistry | | |
| ↑ | 541.36 | thermochemistry | | |
| ↑ | 541.363 | state changes, phase transformations | | |
| ↑ | 541.368 | reactions at extreme temperatures | | |
| ↑ | 541.369 | chemical thermodynamics | → 536.7 | |
| ↑ | 541.37 | electrochemistry, magnetochemistry | | |
| ↑ | 541.372 | electrolytic solutions | | |
| ↑ | 541.378 | magnetochemistry | | |
| ↑ | 541.38 | radiochemistry | | |
| ↑ | 541.388 | isotopes | | |
| ↑ | 541.39 | chemical reactions | | |
| ↑ | 541.392 | chemical equilibrium | | |
| ↑ | 541.393 | oxydo-reduction | | |
| ↑ | 541.394 | chemical kinetics | | |
| ↑ | 541.395 | catalysis | | |
