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  2. Potassium hydrogen phthalate - Wikipedia

    en.wikipedia.org/wiki/Potassium_hydrogen_phthalate

    The pKa of KHP is 5.4, so its pH buffering range would be 4.4 to 6.4; however, due to the presence of the second acidic group that bears the potassium ion, the first pKa also contributes to the buffering range well below pH 4.0, which is why KHP is a good choice for use as a reference standard for pH 4.00.

  3. Phthalic acid - Wikipedia

    en.wikipedia.org/wiki/Phthalic_acid

    In organic chemistry, phthalic acid is an aromatic dicarboxylic acid, with formula C 6 H 4 (CO 2 H) 2 and structure HO(O)C−C 6 H 4 −C(O)OH.Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale. [4]

  4. Phthalates - Wikipedia

    en.wikipedia.org/wiki/Phthalates

    [22] [23] [5] Low-molecular-weight phthalates like dimethyl phthalate and diethyl phthalate are used as fixatives for perfumes. [24] [25] Dimethyl phthalate has been also used as an insect repellent and is especially useful against ixodid ticks responsible for Lyme disease.

  5. US obesity rates drop for 1st time in a decade, with possible ...

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    For the first time in over a decade, obesity rates in the United States may finally be heading in the right direction and new weight loss drugs like semaglutide could be part of the reason why. A ...

  6. Acid value - Wikipedia

    en.wikipedia.org/wiki/Acid_value

    56.1 g/mol is the molecular weight of KOH, W oil is the mass of the sample in grams. The normality (N) of titrant is calculated as: = Where W KHP is the mass (g) of potassium hydrogen phthalate (KHP) in 50 ml of KHP standard solution,

  7. Bariatric surgeries drop sharply as people turn to Wegovy ...

    www.aol.com/bariatric-surgeries-drop-sharply...

    That represented about 1% of all U.S. residents eligible for weight loss operations. Weight loss operations increased in 2022 from the year before, perhaps due to spillover from the COVID-19 ...

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