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ngwaahịa

4-Methylumbelliferone (CAS# 90-33-5)

Ngwongwo kemịkalụ:

Usoro ihe omimi C10H8O3
Molar Mass 176.17
Njupụta 1.1958 (atụmatụ siri ike)
Ebe Na-agbaze 188.5-190C (ọkụ)
Ebe Boling 267.77C (atụmatụ siri ike)
Mmiri Solubility ubé soluble
Solubility Soluble na ethanol, acetic acid, alkali solution na amonia, soluble na mmiri ọkụ, ether na chloroform.
Ọdịdị Ntugharị agịga
Agba pụọ-ọcha ruo edo edo
Ogologo ikuku kacha (λ kacha) ['221nm, 251nm, 322nm']
Merck 14,4854
BRN 142217
pKa 7.79 (na 25 ℃)
Ọnọdụ Nchekwa 2-8 Celsius C
Nkwụsi ike Kwụsie ike. Na-agbanyụ ọkụ. Ekwekọrịtaghị na ndị ọrụ oxidizing siri ike.
Ntụgharị uche 1.5036 (atụ)
MDL MFCD00006866
Njirimara anụ ahụ na kemịkalụ kristal yiri agịga. Ebe mgbaze 185-186 Celsius C (194-195 °c) soluble na ethanol, acetic acid, alkali solution na amonia, soluble na mmiri ọkụ, ether na chloroform. Na mgbakwunye sulfuric acid na ọrụ nke fluorescence na-acha anụnụ anụnụ.
Jiri Ngwaahịa a bụ choleretic, ọ bụkwa n'etiti ọgwụ mgbochi ọrịa cromolyn sodium.

Nkọwa ngwaahịa

Mkpado ngwaahịa

Koodu ihe egwu R36 / 37/38 - na-akpasu iwe na anya, usoro iku ume na akpụkpọ ahụ.
R20/21/22 - na-emerụ ahụ site na iku ume, na kọntaktị na akpụkpọ ahụ ma ọ bụrụ na loro ya.
Nkọwapụta nchekwa S26 - N'ihe banyere kọntaktị na anya, kpochaa ozugbo na ọtụtụ mmiri ma chọọ ndụmọdụ ahụike.
S37/39 - Yiri uwe aka kwesịrị ekwesị na nchebe anya / ihu
S36 - Yiri uwe nchebe kwesịrị ekwesị.
WGK Germany 2
RTECS GN700000
TSCA Ee
Koodu HS 29329990
Ihe edeturu egwu Iwe iwe
Nsi LD50 ọnụ na oke: 3850mg/kg

 

Okwu mmalite

Oxymethocoumarin, nke a makwaara dị ka vanillon, bụ ngwakọta organic.

 

Ogo:

Ọdịdị: Oxymethaumarin bụ kristal na-acha ọcha ma ọ bụ na-acha odo odo siri ike nke nwere ísì pụrụ iche, dị ka vanilla.

Solubility: Oxymethocoumarin na-agbaze ntakịrị na mmiri ọkụ, mana ọ fọrọ nke nta ka ọ ghara ịsacha ya na mmiri oyi. Ọ bụ soluble na organic mgbaze dị ka ethanol, ether na chloroform.

Njirimara kemịkalụ: Oxymethacoumarin kwụsiri ike na ngwọta acidic, mana ọ dị mfe ire ere na ngwọta alkaline siri ike ma ọ bụ oke okpomọkụ.

 

Jiri:

 

Usoro:

Enwere ike ị nweta Oxymethaumarin site na vanilla eke ma na-esite na osisi vanilla herbaceous dị ka vanilla bean ma ọ bụ ahịhịa vanilla. Na mgbakwunye, enwere ike ịkwadebe ya site na ụzọ sịntetik, na-ejikarị coumarin eke eme ihe dị ka akụrụngwa, wee gbanwee site na usoro mmeghachi omume kemịkal.

 

Ozi nchekwa:

A na-ewerekarị Oxymethocoumarin dị mma, mana mmeghachi omume nfụkasị ahụ nwere ike ime na ụfọdụ ndị mmadụ. Mgbe emepụtara ya ma jiri ya mee ihe na ụlọ ọrụ, ekwesịrị ịme usoro nchekwa kwesịrị ekwesị, dị ka iyi uwe mkpuchi na enyo nchebe. Ekwesịrị izere kọntaktị na ihe ndị dị ka acid siri ike, alkalis siri ike, na oxidants iji zere ihe ize ndụ.


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