Idraet mandelic
Cov ntaub ntawv yooj yim
|
Yam khoom |
Paub meej |
|
Suav lub npe |
DL-Mandelic Acid (Alias: Amygdalic Acid, Phenylglycolic Acid, -Hydroxyphenylacetic Acid) |
|
Lub npe Askiv |
DL-Mandelic acid; (±)-Mandelic acid |
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CAS Nr. |
90-64-2 |
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EINECS No. |
202-007-6 |
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Molecular Formula |
C₈H₈O₃ |
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Kwv tij Molecular Mass |
152.15 |
Physicochemical Properties ntawm idraet mandelic
Cov tsos mob: Dawb orthorhombic flake crystals ntawm idraet mandelic, nquag mus rau discoloration thiab decomposition thaum raug rau lub teeb.
Melting Point Range: 119-121 degree
Qhov ceev Parameter: Kwv yees li 1.30
Dej Solubility: Solubility hauv dej yog li 150 g / L ntawm 20 degree
Dissociation Constant: pKa yog kwv yees li 3.85 ntawm 25 degree
Enantiomer Cov yam ntxwv ntawm idraet mandelic
R-isomer: Melting point 133 degree, kev sib hloov tshwj xeeb [ ]D −159.73℃(hauv ethanol hnyav)
S-isomer: Melting point 133.8 degree, kev sib hloov tshwj xeeb [ ]D +156.57℃(hauv dej hnyav)
Racemate: Racemization tshwm sim maj mam nyob ib ncig ntawm 160 degree
Specifications Zoo (Cov qauv qauv, me ntsis sib txawv ntawm cov khoom sib txawv)
|
Index npe |
Txuj Kev Cai |
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Qhov tshwm sim |
Dawb crystalline hmoov |
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Cov ntsiab lus ntsev |
Ntau dua lossis sib npaug li 99.0% |
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Melting Point |
118-121 degree |
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Poob rau ziab |
Tsawg dua lossis sib npaug li 0.5% |
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Residue ntawm Ignition |
Tsawg dua lossis sib npaug li 0.2% |
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Dej-insoluble Matter |
Kev tswj hwm sab hauv, cov qauv siv tsawg dua lossis sib npaug li 0.2% |
Ntim Specifications ntawm idraet mandelic
Ntim Ntim: 25 kg ib lub nruas fiber ntau (kab nrog lub hnab yas)
Customized Ntim: 1 kg, 5 kg, 25 kg thiab lwm yam specifications muaj raws li tus neeg yuav tsum tau muaj
Cim npe nrov: idraet mandelic, Tuam Tshoj idraet mandelic
