enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Calcium chloride - Wikipedia

    en.wikipedia.org/wiki/Calcium_chloride

    Calcium chloride was apparently discovered in the 15th century but wasn't studied properly until the 18th century. [11] It was historically called "fixed sal ammoniac" (Latin: sal ammoniacum fixum [12]) because it was synthesized during the distillation of ammonium chloride with lime and was nonvolatile (while the former appeared to sublime); in more modern times (18th-19th cc.) it was called ...

  3. Cooling bath - Wikipedia

    en.wikipedia.org/wiki/Cooling_bath

    A cooling bath or ice bath, in laboratory chemistry practice, is a liquid mixture which is used to maintain low temperatures, typically between 13 °C and −196 °C. These low temperatures are used to collect liquids after distillation , to remove solvents using a rotary evaporator , or to perform a chemical reaction below room temperature ...

  4. Calcium oxide - Wikipedia

    en.wikipedia.org/wiki/Calcium_oxide

    Calcium hydroxide has a high enough pH to turn the phenolphthalein a vivid purplish-pink color, thus indicating the presence of water. Chemical pulping: Calcium oxide is used to make calcium hydroxide, which is used to regenerate sodium hydroxide from sodium carbonate in the chemical recovery at kraft pulp mills.

  5. Hydrate - Wikipedia

    en.wikipedia.org/wiki/Hydrate

    A colorful example is cobalt(II) chloride, which turns from blue to red upon hydration, and can therefore be used as a water indicator.. The notation "hydrated compound⋅n H 2 O", where n is the number of water molecules per formula unit of the salt, is commonly used to show that a salt is hydrated.

  6. Template:NFPA 704 diamond - Wikipedia

    en.wikipedia.org/wiki/Template:NFPA_704_diamond

    This template produces a NFPA 704 safety square with optionally four hazard codes. It is designed to be used in a table. It is designed to be used in a table. Primary use is through {{ Chembox }} , the {{ NFPA 704 }} box and {{ OrganicBox complete }} (chemical data pages).

  7. Calcium chlorate - Wikipedia

    en.wikipedia.org/wiki/Calcium_chlorate

    When concentrated solutions of calcium chlorate and potassium chloride are combined, potassium chlorate precipitates: [1] [2]. Ca(ClO 3) 2 + 2 KCl → 2 KClO 3 + CaCl 2. This is the second step of the Liebig process for the manufacture of potassium chlorate.

  8. Dicalcium phosphate - Wikipedia

    en.wikipedia.org/wiki/Dicalcium_phosphate

    Dicalcium phosphate is the calcium phosphate with the formula CaHPO 4 and its dihydrate. The "di" prefix in the common name arises because the formation of the HPO 4 2– anion involves the removal of two protons from phosphoric acid, H 3 PO 4. It is also known as dibasic calcium phosphate or calcium monohydrogen phosphate.

  9. Sodium hypochlorite - Wikipedia

    en.wikipedia.org/wiki/Sodium_hypochlorite

    A 1966 US patent claims that stable solid sodium hypochlorite dihydrate NaOCl·2H 2 O can be obtained by carefully excluding chloride ions (Cl −), which are present in the output of common manufacturing processes and are said to catalyze the decomposition of hypochlorite into chlorate (ClO − 3) and chloride. In one test, the dihydrate was ...