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  2. Polybutylene terephthalate - Wikipedia

    en.wikipedia.org/wiki/Polybutylene_terephthalate

    Polybutylene terephthalate (PBT) is a thermoplastic engineering polymer that is used as an insulator in the electrical and electronics industries. [2] It is a thermoplastic (semi-)crystalline polymer, and a type of polyester.

  3. Chemical purity - Wikipedia

    en.wikipedia.org/wiki/Chemical_purity

    ACS grade is the highest level of purity, and meets the standards set by the American Chemical Society (ACS). The official descriptions of the ACS levels of purity is documented in the Reagent Chemicals publication, issued by the ACS. [3] [4] It is suitable for food and laboratory uses. Reagent grade is almost as stringent as the ACS grade.

  4. IUPAC numerical multiplier - Wikipedia

    en.wikipedia.org/wiki/IUPAC_numerical_multiplier

    The numbers 200-900 would be confused easily with 22 to 29 if they were used in chemistry. khīlioi = 1000, diskhīlioi = 2000, triskhīlioi = 3000, etc. 13 to 19 are formed by starting with the Greek word for the number of ones, followed by και (the Greek word for 'and'), followed by δέκα (the Greek word for 'ten').

  5. Tenth grade - Wikipedia

    en.wikipedia.org/wiki/Tenth_grade

    In the Philippines, Grade 10 or Senior Year (Filipino: Ikasampung Baitang), is the last year of Junior High School and the fourth year of High School curriculum. Students enrolled in Grade 10 are usually 15–16 years old. Student can also starts as young age education usually on female students than male students at the age of 14-15 years old.

  6. N-Phenacylthiazolium bromide - Wikipedia

    en.wikipedia.org/wiki/N-Phenacylthiazolium_bromide

    N-Phenacylthiazolium bromide (PTB) [1] is a cross-link breaker that in one study has been shown to prevent vascular advanced glycation end-product accumulation in diabetic rats. [ 2 ] References

  7. Polytrimethylene terephthalate - Wikipedia

    en.wikipedia.org/wiki/Polytrimethylene_terephthalate

    Polytrimethylene terephthalate (PTT), is a polyester synthesized and patented in 1941. [1] [2] It is produced by a method called condensation polymerization or transesterification.

  8. Mortgage and refinance rates for Dec. 20, 2024: Average ... - AOL

    www.aol.com/finance/mortgage-and-refinance-rates...

    Daily average mortgage rates on popular terms are rising as of Friday, December 20, 2024, with sharp moves higher for 30-year terms edging closer to 6.90% — an average 20 basis points higher ...

  9. List of chemistry mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_chemistry_mnemonics

    A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.