File list
This special page shows all uploaded files.
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| Date | Name | Thumbnail | Size | Description | Versions |
|---|---|---|---|---|---|
| 21:43, 27 February 2021 | Dicyandiamide beaker.jpg (file) |  |
1.84 MB | Dicyandiamide prepared from CaCN<sub>2</sub>-Ca(OH)<sub>2</sub>-fertilizer, just after crystallization | 1 |
| 07:27, 14 February 2021 | Chlorobutanol sublimed.jpg (file) |  |
1.84 MB | Chlorobutanol crystals purified by sublimation, picture taken by Abromination | 1 |
| 18:32, 6 March 2019 | Potassium permanganate.jpg (file) |  |
1.85 MB | Potassium permanganate crystals. | 1 |
| 18:01, 3 August 2020 | Nickel aminoguanidine perchlorate.jpg (file) |  |
1.91 MB | Bis(aminoguanidine)nickel(II) perchlorate | 1 |
| 16:45, 28 September 2020 | Vanadium IV ions basic.jpg (file) |  |
1.92 MB | Solution of V(IV) in basic solution, the red-brown color is due to VO(OH)<sub>3</sub><sup>-</sup> | 1 |
| 16:43, 28 September 2020 | Vanadium IV ions acid.jpg (file) |  |
1.92 MB | Solution of V(IV) in HCl, the blue color is due to VO<sup>2+</sup>, made by the oxidation of V(III) with chlorine in acidic solution | 1 |
| 16:53, 28 September 2020 | Vanadium V oxoperoxide.jpg (file) |  |
1.93 MB | Solution of a red V(V) oxoperoxospecies, VO(O<sub>2</sub>)<sup>+</sup> | 1 |
| 16:40, 28 September 2020 | Vanadium III hydroxide.jpg (file) |  |
1.94 MB | Precipitate formed from a solution of VCl<sub>3</sub> and NaOH, likely V(OH)3<sub>3</sub> or a hydrated oxide of V(III) | 1 |
| 16:58, 28 September 2020 | Vanadium V tetraperoxide.jpg (file) |  |
1.94 MB | Solution of a blue V(V) tetraperoxospecies, V(O<sub>2</sub>)<sub>4</sub><sup>3-<sup> | 1 |
| 18:31, 6 March 2019 | Potassium ferrioxalate.jpg (file) |  |
1.95 MB | Potassium ferrioxalate crystals | 1 |
| 19:29, 23 May 2019 | Fluorescein solution.jpg (file) |  |
1.96 MB | A solution of a tiny amount of flourescein in water | 1 |
| 20:37, 2 February 2019 | Salicylic acid crystals.jpg (file) |  |
1.96 MB | Recrystallized salicylic acid obtained by the hydrolysis of acetylsalicylic acid from aspirin tablets. | 1 |
| 09:50, 4 August 2020 | Tungsten carbide.jpg (file) |  |
1.97 MB | A small piece of tungsten carbide | 1 |
| 21:32, 5 November 2020 | Iron III nitrate nonahydrate.jpg (file) |  |
1.97 MB | Commercial sample of iron(III) nitrate nonahydrate | 1 |
| 16:35, 28 September 2020 | Vanadium II.jpg (file) |  |
1.98 MB | Solution of V(II) made by the reduction of V(III) with zinc in hydrochloric acid | 1 |
| 20:05, 1 February 2019 | Gold.jpg (file) |  |
1.98 MB | A small sample of gold foil. | 1 |
| 23:30, 14 July 2019 | Water.jpg (file) |  |
1.99 MB | 1 | |
| 12:35, 6 March 2021 | Galena.jpg (file) |  |
1.99 MB | Galena ore | 1 |
| 20:34, 13 March 2024 | Barium hydroxide octahydrate.jpg (file) |  |
2.01 MB | Barium hydroxide octahydrate crystallized from water. | 1 |
| 12:35, 6 March 2021 | Galena with pyrite.jpg (file) |  |
2.03 MB | Galena ore with pyrite | 1 |
| 23:31, 14 July 2019 | Carbonic acid.jpg (file) |  |
2.04 MB | Solution of carbon dioxide in water | 1 |
| 19:29, 23 May 2019 | Fluorescein.jpg (file) |  |
2.05 MB | Fluorescein made from heating a mix of resorcinol and phthalic anhydride and sulfuric acid, boiling in NaOH and crashing out the dye in HCl | 1 |
| 20:57, 1 February 2019 | Copper acetate.jpg (file) |  |
2.07 MB | Copper(II) acetate | 1 |
| 20:41, 2 February 2019 | Sodium chlorate crystals.jpg (file) |  |
2.1 MB | Sodium chlorate crystals obtained from a chlorate cell by repeated recrystallization from water. | 1 |
| 12:25, 17 June 2019 | Ammonium perchlorate dried 1.jpg (file) |  |
2.18 MB | Dried ammonium perchlorate | 1 |
| 09:37, 25 September 2020 | Red Selenium.jpg (file) |  |
2.18 MB | A sample of red selenium produced by the reduction of selenous acid with sulfur dioxide. | 1 |
| 13:52, 23 May 2021 | Formaldehyde.jpg (file) |  |
2.19 MB | Commercial 37% aqueous formaldehyde | 1 |
| 12:21, 14 May 2021 | Molsieve 3A.jpg (file) |  |
2.19 MB | 3Å molecular sieves from a laboratory supplier | 1 |
| 19:07, 23 May 2019 | Nickel(II) sulfate hexahydrate.jpg (file) | _sulfate_hexahydrate.jpg) |
2.21 MB | Nickle(II) sulfate hexahydrate crystals | 1 |
| 20:15, 1 February 2019 | Sodium acetate trihydrate.jpg (file) |  |
2.21 MB | Crystals of sodium acetate trihydrate can grow very dense and in large number. | 1 |
| 19:16, 23 May 2019 | Potassium dichromate.jpg (file) |  |
2.22 MB | Very pure potassium dichromate crystals | 1 |
| 12:45, 17 June 2019 | Potassium perchlorate.jpg (file) |  |
2.24 MB | Potassium perchlorate, made from potassium chloride and sodium perchlorate. | 1 |
| 09:40, 14 August 2023 | Sodium chlorate polarized.jpg (file) |  |
2.25 MB | Sodium chlorate crystals grown from cooling a pure, slightly supersaturated solution. They are placed between two polarizing filters to show their optical activity. Both enantiomorphic forms are present. | 1 |
| 12:23, 17 June 2019 | Sodium perchlorate in acetone.jpg (file) |  |
2.27 MB | Sodium perchlorate crystallizing out of acetone. | 1 |
| 14:22, 31 July 2019 | Urea nitrate crystals.jpg (file) |  |
2.31 MB | Crystals of urea nitrate grown by evaporation | 1 |
| 16:34, 20 June 2019 | Barium chloride.jpg (file) |  |
2.31 MB | Very pure barium chloride. | 1 |
| 15:24, 23 May 2019 | Sodium dichromate solution.jpg (file) |  |
2.32 MB | A solution of sodium dichromate in acid conditions. The foaming is due to carbon dioxide which evolved because the sample contained carbonates and should not happen with pure samples. | 1 |
| 21:04, 8 March 2019 | Urea.jpg (file) |  |
2.36 MB | Urea, made from AdBlue. | 1 |
| 19:49, 1 February 2019 | Phthalic anhydride.jpg (file) |  |
2.37 MB | Phthalic anhydride obtained by sublimation, cotton-candy like, fluffy crystals. | 1 |
| 17:14, 20 June 2019 | T shaped three way adapter.jpg (file) |  |
2.4 MB | T-shaped three way adapter (two female, one male joint) | 1 |
| 20:25, 1 February 2019 | Iron oxalate.jpg (file) |  |
2.41 MB | Iron(II) oxalate powder. | 1 |
| 17:12, 20 June 2019 | Sideways drying tube.jpg (file) |  |
2.42 MB | An angled drying tube | 1 |
| 17:36, 3 August 2020 | Guanidine nitrate.jpg (file) |  |
2.43 MB | Guanidine nitrate made from melting urea and ammonium nitrate with a silicon dioxide catalyst after one recrystallization | 1 |
| 21:22, 15 July 2019 | Ammonium chlorate.jpg (file) |  |
2.43 MB | Still slightly damp ammonium chlorate, made from concentrated solutions of sodium chlorate and ammonium nitrate and cooled after that | 1 |
| 17:24, 3 August 2020 | Nitroguanidine 2.jpg (file) |  |
2.44 MB | 1 | |
| 12:25, 17 June 2019 | Ammonium perchlorate dried 2.jpg (file) |  |
2.45 MB | Dried ammonium perchlorate | 1 |
| 17:13, 20 June 2019 | Vertical distillation receiver adapter.jpg (file) |  |
2.46 MB | Vertical distillation receiving adapter or straight vacuum take-off adapter | 1 |
| 14:28, 28 May 2019 | Copper(II) citrate pentahydrate.jpg (file) | _citrate_pentahydrate.jpg) |
2.52 MB | 1 | |
| 12:00, 3 July 2019 | TACN TACS.jpg (file) |  |
2.53 MB | Left: TACN, tetraaminecopper(II) nitrate (possibly hydrated). Right: TACS, tetraaminecopper(II) sulfate monohydrate. | 1 |
| 13:20, 27 September 2020 | Hydroxylamine hydrochloride2.jpg (file) |  |
2.53 MB | Small crystals of hydroxylamine hydrochloride made from the hydrolysis of nitromethane | 1 |
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