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  2. Solubility chart - Wikipedia

    en.wikipedia.org/wiki/Solubility_chart

    The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.

  3. Potassium carbonate - Wikipedia

    en.wikipedia.org/wiki/Potassium_carbonate

    2 KOH + CO 2 → K 2 CO 3 + H 2 O. From the solution crystallizes the sesquihydrate K 2 CO 3 ·1.5H 2 O ("potash hydrate"). Heating this solid above 200 °C (392 °F) gives the anhydrous salt. In an alternative method, potassium chloride is treated with carbon dioxide in the presence of an organic amine to give potassium bicarbonate, which is ...

  4. Potassium hydroxide - Wikipedia

    en.wikipedia.org/wiki/Potassium_hydroxide

    Because aggressive bases like KOH damage the cuticle of the hair shaft, potassium hydroxide is used to chemically assist the removal of hair from animal hides. The hides are soaked for several hours in a solution of KOH and water to prepare them for the unhairing stage of the tanning process. This same effect is also used to weaken human hair ...

  5. Potassium acetate - Wikipedia

    en.wikipedia.org/wiki/Potassium_acetate

    ch 3 cooh + koh → ch 3 cook + h 2 o This sort of reaction is known as an acid-base neutralization reaction. At saturation, the sesquihydrate in water solution (CH 3 COOK·1½H 2 O) begins to form semihydrate at 41.3 °C.

  6. Food composition data - Wikipedia

    en.wikipedia.org/wiki/Food_composition_data

    However, as the food supply has evolved, and with the increasing demand for nutritional and related components, it has become more difficult for compilers to rely only on chemical analysis when compiling FCDBs. For example, in the UK the third edition of The Composition of Foods [3] presented data on vitamin content of foods. However, due to ...

  7. Alkalinity - Wikipedia

    en.wikipedia.org/wiki/Alkalinity

    Perhaps the most well known is the dissolution of calcium carbonate to form Ca 2+ and CO 2− 3 (carbonate). The carbonate ion has the potential to absorb two hydrogen ions. Therefore, it causes a net increase in ocean alkalinity. Calcium carbonate dissolution occurs in regions of the ocean which are undersaturated with respect to calcium ...

  8. Food grading - Wikipedia

    en.wikipedia.org/wiki/Food_grading

    Food grading involves the inspection, assessment and sorting of various foods regarding quality, freshness, legal conformity and market value. [1] [2] Food grading is often done by hand, in which foods are assessed and sorted. [1] [2] Machinery is also used to grade foods, and may involve sorting products by size, shape and quality.

  9. Potassium sorbate - Wikipedia

    en.wikipedia.org/wiki/Potassium_sorbate

    In pure form, potassium sorbate is a skin, eye, and respiratory irritant. [12] [13] Concentrations up to 0.5% are not significant skin irritants. [14] As a food additive, potassium sorbate is used as a preservative in concentrations of 0.025–0.100%, [15] which in a 100 g serving yields an intake

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