File list
This special page shows all uploaded files.
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| Date | Name | Thumbnail | Size | Description | Versions |
|---|---|---|---|---|---|
| 20:34, 13 March 2024 | Barium hydroxide octahydrate.jpg (file) |  |
2.01 MB | Barium hydroxide octahydrate crystallized from water. | 1 |
| 18:17, 5 March 2024 | Quinine sulfate solution.jpg (file) |  |
1.68 MB | Fluorescence of an acidic solution of quinine (along other related cinchona alkaloids). | 1 |
| 12:35, 26 January 2024 | HCN Pok.jpg (file) |  |
106 KB | Liquid anhydrous HCN in an ampoule stabilized with phosphoric acid, prepared by Pok, see https://www.sciencemadness.org/whisper/viewthread.php?tid=160124. | 1 |
| 08:16, 12 November 2023 | Copper perchlorate by Tiget.jpg (file) |  |
1.72 MB | Copper(II) perchlorate hexahydrate crystals. Image permission generously granted by Tiget. | 1 |
| 20:44, 14 August 2023 | Dicyandiamid2.jpg (file) |  |
113 KB | Crystal aggregates of dicyandiamide/cyanoguanidine after being recrystallized from water, close-up. | 1 |
| 20:43, 14 August 2023 | Dicyandiamide crystal aggregates.jpg (file) |  |
113 KB | Crystal aggregates of dicyandiamide/cyanoguanidine after being recrystallized from water. | 1 |
| 20:43, 14 August 2023 | Dicyandiamide initial needles.jpg (file) |  |
159 KB | Needle-shaped crystals of dicyandiamide/cyanoguanidine crystallizing from boiled calcium cyanamide fertilizer solution. | 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 |
| 14:25, 10 January 2023 | Copper I chloride exf community.jpg (file) |  |
1.2 MB | Copper(I) chloride prepared by a member of the Ex&F community and used with permission of the author. | 1 |
| 12:20, 17 August 2022 | Chlorine dioxide.jpg (file) |  |
239 KB | Chlorine dioxide, screenshot taken from https://www.youtube.com/watch?v=VAIgHgdaHas | 1 |
| 15:18, 13 August 2022 | Singlet oxygen.jpg (file) |  |
521 KB | Chemiluminescence of singlet oxygen observed when passing chlorine gas into basic hydrogen peroxide. | 1 |
| 09:13, 10 September 2021 | Nitromethane.jpg (file) |  |
1.36 MB | Nitromethane fractionally distilled from RC car fuel. | 1 |
| 19:48, 9 September 2021 | Trimethyl borate methanol azeotrope.jpg (file) |  |
1,011 KB | Trimethyl borate/methanol azeotrope distilled from methanol, boric acid and catalytic sulfuric acid. | 1 |
| 19:47, 9 September 2021 | Trimethyl borate flame.jpg (file) |  |
353 KB | The trimethyl borate/methanol azeotrope set on fire produces a vibrant green flame. | 1 |
| 12:01, 7 September 2021 | Benzalazine.jpg (file) |  |
1.57 MB | Benzalazine, prepared from ammonia, hydrazine sulfate and benzaldehyde and recrystallized from 95% ethanol (doi.org/10.15227/orgsyn.016.0051) | 1 |
| 15:26, 2 September 2021 | Benzoic acid.jpg (file) |  |
1.44 MB | Benzoic acid made from sodium benzoate food preservative, recrystallized from water. | 1 |
| 08:27, 24 August 2021 | Liquid chlorine.jpg (file) |  |
1 MB | A sample of liquid chlorine. | 1 |
| 15:28, 25 May 2021 | Violuric acid monohydrate.jpg (file) |  |
3.03 MB | Violuric acid monohydrate, prepared and photographed by SM user RustyShackleford | 1 |
| 13:54, 23 May 2021 | Zinc oxide.jpg (file) |  |
1.13 MB | Commercial zinc oxide | 1 |
| 13:54, 23 May 2021 | Sodium hypophosphite.jpg (file) |  |
1,002 KB | Sodium hypophosphite, probably the monohydrate | 1 |
| 13:53, 23 May 2021 | Potassium iodide.jpg (file) |  |
1.03 MB | Commercial potassium iodide | 1 |
| 13:52, 23 May 2021 | Formaldehyde.jpg (file) |  |
2.19 MB | Commercial 37% aqueous formaldehyde | 1 |
| 13:51, 23 May 2021 | Cobalt sulfate heptahydrate.jpg (file) |  |
1.24 MB | Commercial cobalt(II) sulfate heptahydrate, possibly somewhat dehydrated | 1 |
| 13:50, 23 May 2021 | Ammonium carbonate.jpg (file) |  |
1.44 MB | Commercial ammonium carbonate | 1 |
| 12:21, 14 May 2021 | Molsieve 3A.jpg (file) |  |
2.19 MB | 3Å molecular sieves from a laboratory supplier | 1 |
| 10:01, 7 May 2021 | Aminoguanidine bicarbonate micro 3.jpg (file) |  |
568 KB | Commercial aminoguanidine bicarbonate, recrystallized from hot water, microscopic view of a single crystal, approximately 1 mm in length. | 1 |
| 10:00, 7 May 2021 | Aminoguanidine bicarbonate micro 2.jpg (file) |  |
2.71 MB | Commercial aminoguanidine bicarbonate, recrystallized from hot water, microscopic view. | 1 |
| 10:00, 7 May 2021 | Aminoguanidine bicarbonate micro 1.jpg (file) |  |
925 KB | Commercial aminoguanidine bicarbonate, recrystallized from hot water. | 1 |
| 09:55, 7 May 2021 | Aminoguanidinium bicarbonate zwitterion.png (file) |  |
37 KB | 1 | |
| 07:37, 29 April 2021 | Acetophenone frozen.jpg (file) |  |
4.61 MB | A drop of frozen commercial acetophenone under a microscope. | 1 |
| 18:54, 6 March 2021 | Calcium cyanamide fertilizer.jpg (file) |  |
1.67 MB | Commercial calcium cyanamide fertilzer | 1 |
| 12:35, 6 March 2021 | Galena with pyrite.jpg (file) |  |
2.03 MB | Galena ore with pyrite | 1 |
| 12:35, 6 March 2021 | Galena.jpg (file) |  |
1.99 MB | Galena ore | 1 |
| 21:44, 27 February 2021 | Trichlorohexahydrotriazine.jpg (file) |  |
1.06 MB | 1,3,5-Trichlorohexahydrotriazine, an unstable organic chloramine prepared from hexamine, acetic acid and sodium hypochlorite | 1 |
| 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 |
| 21:42, 27 February 2021 | Dicyandiamide.jpg (file) |  |
966 KB | Dicyandiamide prepared from CaCN<sub>2</sub>-Ca(OH)<sub>2</sub>-fertilizer | 1 |
| 21:29, 27 February 2021 | Myo Inositol.jpg (file) |  |
1.04 MB | Commercial myo-inositol, recrystallized from 50/50 ethanol/water, affording a dihydrate | 1 |
| 07:27, 14 February 2021 | Chlorobutanol sublimed.jpg (file) |  |
1.84 MB | Chlorobutanol crystals purified by sublimation, picture taken by Abromination | 1 |
| 10:35, 29 November 2020 | HMTD micro.jpg (file) |  |
361 KB | 1 | |
| 21:32, 5 November 2020 | Iron III nitrate nonahydrate.jpg (file) |  |
1.97 MB | Commercial sample of iron(III) nitrate nonahydrate | 1 |
| 21:52, 19 October 2020 | Tetraiodobismuthate.jpg (file) |  |
3.16 MB | A solution of bismuth(III) with excess potassium iodide forms the orange complex ion tetraiodobismuthate [BiI<sub>4</sub>]<sup>-</sup> | 1 |
| 21:48, 19 October 2020 | Bismuth oxynitrate.jpg (file) |  |
3.48 MB | When an acidic solution of bismuth nitrate is diluted in water, bismuth oxynitate precipitates and settles after a while | 1 |
| 21:45, 19 October 2020 | Bismuth nitrate pentahydrate.jpg (file) |  |
307 KB | Crystal of bismuth nitrate pentahydrate under the microscope, the crystal is about 3 mm long | 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 |
| 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 |
| 16:51, 28 September 2020 | Vanadium V oxodiperoxide.jpg (file) |  |
1.83 MB | Solution of a yellow V(V) oxoperoxospecies, VO(O<sub>2</sub>)<sub>2</sub><sup>-</sup> or VO<sub>2</sub>(O<sub>2</sub>)<sub>2</sub><sup>3-</sup> | 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 |
| 16:40, 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 |
| 16:38, 28 September 2020 | Vanadium III chloride water.jpg (file) |  |
1.75 MB | Solution of VCl<sub>3</sub> in water, the brown color is due to various hydrolysed species like VO<sup>+</sup> | 1 |
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