Naphtholphthalein CAS 596-01-0

CAS:596-01-0 : kuv

Molecular Formula:C28H18O4

Molecular Luj:418.44 ib

EINECS:209-875-5 ib

Synonyms:3,3-bis(4-hydroxynaphthalen-1-yl)-1,3-dihydro-2-benzofuran-1-ib; alpha-Naphtholphthalein, qhia, ntshiab 5GR; 3,3-Bis(4-hydroxynaphthalen-1-yl)isobenzofuran-1(3H)-ib; 1-NAPHTHOLPHTHALEIN Indicator PH 7,1 - 8; 1-NAPHTHOLPHTHALEIN; ALPHA-NAPHTHOLPHTHALEIN; NAPHTHOLPHTHALEIN

Tso Koj Cov Lus

Product Detail

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Khoom cim npe

Alpha-Naphtholphthalein CAS 596-01-0 yog dab tsi?

Cov impurities hauv alpha Nathophthalein feem ntau yog xim liab, uas hloov ntawm lub teeb liab mus rau xiav-ntsuab ntawm pH 7.3-8.7.

Specification

Yam khoom	Specification
Boiling point	496.21°C (kev kwv yees kwv yees)
Qhov ntom	1.1532 (zeeg)
Melting point	238-240 ° C (lit.)
pKa	8.0, 8.2, 8.5 (ntawm 25 ℃)
tiv taus	1.6400 (kwv yees)
Cia tej yam kev mob	Khaws hauv qab +30 ° C.

Daim ntawv thov

Alpha Nephthophyllein yog siv los ua cov kua qaub-puag qhia. Nws tsis muaj xim rau txiv kab ntxwv daj ntawm pH ntawm ib ncig ntawm 6.7 thiab hloov ntawm txiv kab ntxwv daj mus rau xiav ntawm pH ntawm ib ncig ntawm 7.9. Cov khoom tsis huv hauv cov khoom lag luam feem ntau tshwm sim raws li lub teeb liab xim, uas hloov ntawm lub teeb liab mus rau xiav-ntsuab ntawm pH ntawm 7.3-8.7.