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  2. Labeling of fertilizer - Wikipedia

    en.wikipedia.org/wiki/Labeling_of_fertilizer

    The N value in NPK labels represents actual percentage of nitrogen element by weight, so it does not need to be converted. ... 15-0-0 Calcium nitrate; 21-0-0 Ammonium ...

  3. Ammonium sulfate - Wikipedia

    en.wikipedia.org/wiki/Ammonium_sulfate

    Calcium carbonate precipitates as a solid, leaving ammonium sulfate in the solution. (NH 4) 2 CO 3 + CaSO 4 → (NH 4) 2 SO 4 + CaCO 3. Ammonium sulfate occurs naturally as the rare mineral mascagnite in volcanic fumaroles and due to coal fires on some dumps. [14] Ammonium sulfate is a byproduct in the production of methyl methacrylate. [15]

  4. List of UN numbers 1401 to 1500 - Wikipedia

    en.wikipedia.org/wiki/List_of_UN_numbers_1401_to...

    n.o.s. = not otherwise specified meaning a collective entry to which substances, mixtures, solutions or articles may be assigned if a) they are not mentioned by name in 3.2 Dangerous Goods List AND b) they exhibit chemical, physical and/or dangerous properties corresponding to the Class, classification code, packing group and the name and description of the n.o.s. entry [2]

  5. International Numbering System for Food Additives - Wikipedia

    en.wikipedia.org/wiki/International_Numbering...

    ammonium sulfate: mineral salt, improving agent 518 A U magnesium sulfate, Epsom salts: mineral salt, acidity regulator, firming agent 519 A U cupric sulfate: mineral salt 520 E U aluminium sulfate: mineral salt 521 E U aluminium sodium sulfate: mineral salt 522 E U aluminium potassium sulfate: mineral salt 523 E U aluminium ammonium sulfate ...

  6. Ammonium sulfate precipitation - Wikipedia

    en.wikipedia.org/wiki/Ammonium_sulfate_precipitation

    Ammonium sulfate is an inorganic salt with a high solubility that disassociates into ammonium (NH + 4) and sulfate (SO 2− 4) in aqueous solutions. [1] Ammonium sulfate is especially useful as a precipitant because it is highly soluble, stabilizes protein structure, has a relatively low density, is readily available, and is relatively inexpensive.

  7. Sulfate nitrates - Wikipedia

    en.wikipedia.org/wiki/Sulfate_nitrates

    Two sulfate nitrates are in the class of anthropogenic compounds, accidentally made as a result of human activities in fertilizers that are a mix of ammonium nitrate and ammonium sulfate, and also in the atmosphere as polluting ammonia, nitrogen dioxide, and sulfur dioxide react with the oxygen and water there to form solid particles.

  8. Kjeldahl method - Wikipedia

    en.wikipedia.org/wiki/Kjeldahl_method

    NaOH reacts the ammonium (NH 4 +) to ammonia (NH 3), which boils off the sample solution. Ammonia bubbles through the standard acid solution and reacts back to ammonium salts with the weak or strong acid. [3] Ammonium ion concentration in the acid solution, and thus the amount of nitrogen in the sample, is measured via titration.

  9. List of inorganic compounds - Wikipedia

    en.wikipedia.org/wiki/List_of_inorganic_compounds

    Ammonium bromide – NH 4 Br [37] Ammonium chromate – [NH 4] 2 CrO 4 [38] Ammonium cerium(IV) nitrate – [NH 4] 2 [Ce(NO 3) 6] Ammonium cerium(IV) sulfate – [NH 4] 4 [Ce(SO 4) 4] Ammonium chloride – [NH 4]Cl [39] Ammonium chlorate – [NH 4]ClO 3 [40] Ammonium cyanide – [NH 4]CN [41] Ammonium dichromate – [NH 4] 2 Cr 2 O 7 [42 ...