4,4'-Diamino-2,2'-stilbenedisulfonic acid CAS 81-11-8

CAS:81-11-8 : kuv

Molecular Formula:C14H14N2O6S2

Molecular Luj:370.4 ib

EINECS:201-325-2

Synonyms:diamostilbenedisulfonicacid; 4,4'-Diaminodiphenylethylene-2,2'-disulfonic acid'; 4',4" Diamino tseembene 2'2" disulphonic acid; 1,2-bis (4-amino-2-sulfophenyl) ethene; 4,4'-Diamino-2,2'-stibenedisulfonic acid; 4,4'-DIAMINO-2,2'-STILBENEDISULFONIC ACI D, TECH, 85%; 2,2'-(1,2-ethenediyl)bis[5-amino-benzenesulfonicaci; 2,2'-(1,2-ethenediyl)bis[5-amino-Benzenesulfonicacid; 2,2'-(1,2-ethenediyl)bis [5-amino-benzenesulfonicacid]

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4,4'-Diamino-2,2'-stilbenedisulfonic acid CAS 81-11-8 yog dab tsi?

4,4 '- diaminodiphenyl-2,2' - disulfonic acid belongs rau cov chav kawm ntawm stilbene tebchaw thiab tuaj yeem npaj los ntawm hydrogenation ntawm nws cov nitro hloov ua ntej cov tebchaw. 4,4 '- Diamino-2,2' - stilbenedisilfonic acid yog ib rab koob daj zoo li hygroscopic siv lead ua. Soluble me ntsis hauv dej, soluble hauv ethanol thiab ether, yooj yim soluble hauv alkaline daws.

Specification

Yam khoom	Specification
pKa	-1.58 ± 0.50 (Tshaj tawm)
Melting point	300 ° C
Qhov ntom	1.4732 (zeeg)
Vapor siab	1.3hPa ntawm 25 ℃
SOLUBLE	<0.1 g / 100 mL ntawm 23 ºC
Refractivity	1.6510 (kwv yees)

Daim ntawv thov

4,4 '- Diamino-2,2' - stilbenedisilfonic acid dye thiab nruab nrab xws li fluorescent whitening agent. 4,4 '- Diamino-2,2' - stilbenedisilfonic acid yog siv los tsim fluorescent whitening agent, ncaj khov daj G thiab ncaj daj R, thiab ua tshuaj tua kab