mannitann.

Brit.

/ˈmanɪtan/, U.S.

/ˈmænəˌtæn/

Forms: 1800s mannitane, 1800s– mannitan.

Origin: Formed within English, by derivation. Etymons: mannite n., -an suffix.

Etymology: < mannite n. + -an suffix. Compare German Mannitan (1861), French mannitane (1868 in Littré).

Chemistry. Now rare.

A cyclic anhydride of mannitol, C₆H₁₂O₅, occurring as crystals or a light syrupy liquid.

ΚΠ

1857 W. A. Miller Elements Chem. III. 384 Mannitane.

1862 H. Watts tr. L. Gmelin Hand-bk. Chem. XV. 369 Mannitan.

1867 C. L. Bloxam Chemistry 578 Heating mannite to 400°F., when it loses an equivalent of water, and is converted into mannitane.

1912 Jrnl. Biol. Chem. 11 144 Mannitan distearate saponifies readily with alcoholic alkali.

1946 Jrnl. Amer. Chem. Soc. 68 931/1 According to theory, nine mannitans are possible.

1953 G. E. Fogg Metabolism of Algae vi. 92 An anhydride of mannitol, mannitan, has been reported as occurring in Pelvetia canaliculata.

This entry has been updated (OED Third Edition, September 2000; most recently modified version published online March 2022).

单词	mannitan
释义	mannitann. Brit. /ˈmanɪtan/, U.S. /ˈmænəˌtæn/ Forms: 1800s mannitane, 1800s– mannitan. Origin: Formed within English, by derivation. Etymons: mannite n., -an suffix. Etymology: < mannite n. + -an suffix. Compare German Mannitan (1861), French mannitane (1868 in Littré). Chemistry. Now rare. A cyclic anhydride of mannitol, C₆H₁₂O₅, occurring as crystals or a light syrupy liquid. ΚΠ 1857 W. A. Miller Elements Chem. III. 384 Mannitane. 1862 H. Watts tr. L. Gmelin Hand-bk. Chem. XV. 369 Mannitan. 1867 C. L. Bloxam Chemistry 578 Heating mannite to 400°F., when it loses an equivalent of water, and is converted into mannitane. 1912 Jrnl. Biol. Chem. 11 144 Mannitan distearate saponifies readily with alcoholic alkali. 1946 Jrnl. Amer. Chem. Soc. 68 931/1 According to theory, nine mannitans are possible. 1953 G. E. Fogg Metabolism of Algae vi. 92 An anhydride of mannitol, mannitan, has been reported as occurring in Pelvetia canaliculata. This entry has been updated (OED Third Edition, September 2000; most recently modified version published online March 2022). < n.1857
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