| WASHINGSODA | Crystalline decahydrate of sodium carbonate used as a cleaning agent (7,4) |
| LIMESTONE | A sedimentary rock consisting mainly of calcium carbonate, used as a building material (9) |
| SMELLINGSALTS | Preparation of scented ammonium carbonate used as a restorative, especially in cases of fainting (8,5) |
| PUMICE | Lava used as a cleaning stone (6) |
| SOAP | A cleaning agent which is a compound of fatty acid with potash and another metallic oxide which when rubbed in water yields a lather |
| BAKINGSODA | Person going round a London college with a cleaning agent (6,4) |
| SOFTSOAP | Smudged spots of a cleaning agent (4,4) |
| CAUSTICSODA | A scout's acid reviewed as a cleaning ingredient? (7,4) |
| SALVOLATILE | Solution of ammonium carbonate used as smelling salts (3,8) |
| TOPTOBOTTOM | Thorough, as a cleaning |
| DOLOMITE | White crystalline mineral consisting primarily of calcium magnesium carbonate, used as an alternative to limestone in the manufacture of cement (8) |
| MALACHITE | Bright green mineral consisting of hydrated copper carbonate, used as an ornamental stone (9) |
| ROBUST | Macedonia is out of sodium carbonate and that's tough (6) |
| SODAASH | The anhydrous commercial form of sodium carbonate (4,3) |
| NOFUSS | Easy to use, as a cleaning product |
| ACETONE | A colourless liquid with a sweetish odour used as a solvent and cleaning agent (7) |
| MAGNESIA | Carbonate used as an antacid (8) |
| SWEEP | A curving driveway, stair or stretch of country road; a cleaning stroke with a broom or brush; a long oar of an open boat; or, a shadoof for raising buckets from a well (5) |
| WHITELEAD | Lead carbonate used in painting white (5,4) |
| LEBLANC | Nicolas -; French chemist who developed a process for making sodium carbonate from common salt (7) |
