Stearic acid

Stearic acid yog cov hmoov dawb los yog dawb los yog crystalline khoom nrog ib rab koob zoo li siv lead ua nrog micro-gloss profile; Muaj ib tug me ntsis tsw, zoo ib yam li roj, tasteless. Cov khoom no tau yooj yim soluble hauv chloroform lossis ether, soluble hauv ethanol thiab yuav luag insoluble hauv dej.

Xa kev nug

Hauj lwm lawm

Kev piav qhia

Khoom npe: Stearic Acid
Qauv TSIS MUAJ: C18H3602
Keeb kwm: Suav teb
CAS Naj Npawb: 57-11-4
EINECS tus lej: 266-928-5

daim ntawv pov thawj ntawm authenticity

TSEEM CEEB	STANDARD	TSEEM CEEB
Sab nrauv	Flakes los yog hlaws dai	Cov hlaws dai
Xim, Hazen	Tsawg dua los yog sib npaug li 60	33
Acid naj npawb, mgKOH/g	207-211	210.4
Saponification tus nqi, mgKOH/g	208-212	210.95
Tus nqi iodine, hl2/100g	Tsawg dua lossis sib npaug rau 0.5	0.17
Cov dej noo,%	Tsawg dua lossis sib npaug rau 0.2.	0.08
Melting point, degree C	53-57	56.1
Fatty acid muaj pes tsawg leeg
C12+C14,% C16,% C18,% Lwm tus.%	Tsawg dua los yog sib npaug li 1.5 52-59 40-44 Tsawg dua los yog sib npaug li 1.5	0.58 55.89 ib 43.14 Nws 0.39



TEEB MEEM	PASS

Daim ntawv thov

1. Ib qho tseem ceeb ntawm kev siv stearic acid yog emulsification. Yog li ntawd, nws yog feem ntau ntxiv rau ntau yam khoom xws li tshuaj pleev ib ce, khoom noj thiab tshuaj. Thaum tov nrog dej, nws tuaj yeem pab tsim kom muaj qhov ruaj khov emulsion los ntawm kev ua tus surfactant. Cov cuab yeej no tso cai rau nws siv ntau yam khoom siv: los ntawm cov tshuaj pleev ib ce thiab cov tshuaj nplaum rau margarine thiab ice cream.

2. Stearic acid kuj yog ib qho zoo heev lubricant thiab siv nyob rau hauv ntau yam lag luam. Piv txwv li, nws yog siv los ua cov roj nplua nyeem hauv kev tsim cov txheej txheem uas muaj kev sib txhuam thiab cua sov, xws li hauv kev tsim cov yas thiab roj hmab. Nws kuj yog siv los ua tswm ciab, qhov twg nws yuav pab tsim kom muaj ib tug qeeb-kub, ntev-ntev nplaim taws.

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