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| | ALPHA-D-GALACTURONIC ACID HYDRATE Basic information |
| | ALPHA-D-GALACTURONIC ACID HYDRATE Chemical Properties |
| Melting point | 156-159℃ | | alpha | +51.7°(23℃/D, ｃ=1, H2O) | | refractive index | 52.5 ° (C=10, H2O) | | storage temp. | Inert atmosphere,Room Temperature | | solubility | DMSO (Slightly, Sonicated), Methanol (Slightly), Water (Slightly) | | form | Powder | | color | White to Off-white | | optical activity | [α]20/D +53±2°, 5 hr, c = 10% in H2O | | Water Solubility | Soluble in water | | Merck | 14,4337 | | BRN | 1727087 | | CAS DataBase Reference | 91510-62-2(CAS DataBase Reference) |
| Safety Statements | 24/25 | | WGK Germany | 3 | | TSCA | Yes | | HS Code | 29329990 |
| | ALPHA-D-GALACTURONIC ACID HYDRATE Usage And Synthesis |
| Chemical Properties | white to light beige fine powder | | Uses | D-(+)-Galacturonic acid monohydrate is a chemical used in the synthesis of N-(D-galacturonoyl) amino acids and dipeptides. | | Uses | ALPHA-D-GALACTURONIC ACID HYDRATE is highly purified product form Pectine.It is used in the synthesis of N-(D-galacturonoyl) amino acids and dipeptides. | | Purification Methods | Crystallisation of the acid from 95% EtOH and drying it in a vacuum desiccator (12mm) over P2O5 gives the monohydrate mixture of and anomers (mostly -) as white micro needles, which sinter at ~100-111o and melt at 159-160o, [] D 20 +107o (initial, c 4 in H2O mutarotating to +51o). [Link & Sell Biochemical Preparations 3 74, 78 1953, Beilstein 3 IV 2000.] The -anomer is obtained by warming the -anomer in EtOH, AcOH or EtOAc and has m 1 6 0o (165o, sinters at 1 4 0o), [] D 20 +27o (initial, c 2 in H2O mutarotating to +55.3o in 24hours). The sodium salt [14984-39-5] M 216.1 has [] D 20 +27o (c 10 in H2O after 5hours). The phenylhydrazone has m 141o(from MeOH). [Ehrlich & Schubert Chem Ber 62 1974, 2014 1929, Anderson & King J Chem Soc 5333 1961, Beilstein 3 IV 2001.] |
| | ALPHA-D-GALACTURONIC ACID HYDRATE Preparation Products And Raw materials |
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