Protocatechuic acid CAS 99-50-3 Protocatechuic acid (PCA) yog 3,4-dihydroxybenzoic acid. Nws yog ib qho yooj yim phenolic acid, uas yog ib tug precursor rau lub synthesis ntawm lwm complex molecules, xws li anthocyanin 3-ochemicalbook- β- D-glucoside thiab vanillin. Nws muaj nyob rau hauv cov zaub uas noj tau, txiv hmab txiv ntoo, txiv ntoo, nplej xim av, pecans, tshuaj yej, hibiscus paj thiab qee cov tshuaj suav tshuaj ntsuab.
Ntseeg Chemical yog cov thawj coj hauv Suav tebProtocatechuic acid CAS 99-50-3 ibmanufacturers, tsum thiab exporter. Adhering mus nrhiav kev zoo meej ntawm cov khoom, kom pebProtocatechuic acid CAS 99-50-3 ibtau txaus siab los ntawm ntau cov neeg siv khoom. Shandong Ntseeg
Peb zoo ntawm qhov zoo ntawm cov khoom siv tshuaj lom neeg hauv thaj chaw. Peb cov khoom raug xa tawm mus rau Tebchaws Europe, Tebchaws Meskas, Nyiv, Kaus Lim Qab Teb, Sab Hnub Tuaj Asia thiab lwm lub tebchaws thiab cheeb tsam. Nrog rau kev tshawb fawb thiab thev naus laus zis raws li kev qhia, kev ncaj ncees raws li lub hauv paus, zoo li lub neej, thiab tso siab rau lub tswv yim kev lag luam ntawm kev tsim kho tshiab thiab kev loj hlob, peb cia siab tias yuav tsim kev sib pauv thiab kev koom tes nrog cov neeg siv khoom hauv tsev thiab txawv teb chaws los tsim kev vam meej!
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Khoom npe |
Protocatechuic acid |
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Formula |
Molecular Luj |
154.12 | |
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CAS Nr. |
99-50-3 ib |
Ntau |
500 KG |
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Cov khoom |
Specification |
Cov txiaj ntsig |
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Qhov tshwm sim |
dawb crystalline hmoov |
Ua raws |
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Assay |
â € 99.0% |
99.16% |
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TEEB MEEM |
Qhov tshwm sim ua raws li tus qauv |
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Melting point 197-200 ° C (Lub Kaum Ob Hlis) (L)
Boiling point 237.46 ° C (kwv yees ntxhib)
Ceev 1.54
Refractive index 1.6400 (kwv yees) fema4430 | 3,4-dihydroxybenzoic acid
Tsawg kub 30 ° C cia tej yam kev mob
Solubility 20g / l
Acidity coefficient (PKA) 4.48 (ntawm 25 â ¢ º)
Morphology ntawm nplua-grained hmoov
Xim beige rau xim av
Protocatechuic acid (PCA) yog 3,4-dihydroxybenzoic acid. Nws yog ib qho yooj yim phenolic acid, uas yog ib tug precursor rau lub synthesis ntawm lwm complex molecules, xws li anthocyanin 3-ochemicalbook- β- D-glucoside thiab vanillin. Nws muaj nyob rau hauv cov zaub uas noj tau, txiv hmab txiv ntoo, txiv ntoo, nplej xim av, pecans, tshuaj yej, hibiscus paj thiab qee cov tshuaj suav tshuaj ntsuab.
