Valeric acid (CAS # 109-52-4) Featured duab

Valeric acid CAS Nr 109-52-4

Chemical Property:

Molecular Formula	C5H10O2
Molar Mass	102.13 Nws
Qhov ntom	0.939g / mLat 25 ° C (lit.)
Melting Point	-20--18°C (lit.)
Boling Point	110-111 ° C 10 hli Hg (lit.)
Flash Point	192 ° F
JECFA Number	90
Dej Solubility	40 g / L (20 ºC)
Solubility	40 g / l
Vapor Siab	0.15 hli Hg (20 ° C)
Vapor Density	3.5 (vs huab cua)
Qhov tshwm sim	Ua kua
Xim	Ntshiab xim tsis muaj xim rau daj ntseg daj
Merck	14, 9904 ib
BRN	969454 ib
pKa	4.84 (ntawm 25 ℃)
PH	3.95 (1 mM tov); 3.43 (10 mM tov); 2.92 (100 mM tov);
Kev cia khoom	Khaws hauv qab +30 ° C.
Explosive txwv	1.8-7.3% (V)
Refractive Index	n20/D 1.408 (lit.)
Physical thiab Chemical Properties	cov kua tsis muaj xim nrog cov ntxhiab tsw tsw qab tsis muaj xim los yog daj daj ua kua hauv qhov tsos.
Siv	Feem ntau yog siv rau kev npaj N-valerate, organic synthesis ntawm cov ntaub ntawv raw, dav siv hauv cov txuj lom, tshuaj, lubricants, plasticizers thiab lwm yam lag luam.

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Khoom cim npe

Hazard Cov Cim	C - Corrosive
Risk Codes	R34 - Ua rau kub hnyiab R52/53 - Ua phem rau cov kab mob hauv dej, tuaj yeem ua rau muaj kev cuam tshuam ntev rau hauv dej hiav txwv.
Kev nyab xeeb piav qhia	S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S36 - Hnav khaub ncaws tiv thaiv zoo. S45 - Thaum muaj xwm txheej lossis yog tias koj tsis xis nyob, nrhiav kev kho mob tam sim ntawd (qhia daim ntawv lo thaum twg ua tau.) S61 - Tsis txhob tso tawm rau ib puag ncig. Xa mus rau cov lus qhia tshwj xeeb / cov ntaub ntawv kev nyab xeeb.
UN IDs	UN 3265 8/PG 3
WGK Germany	1
RTECS	YV6100000
FLUKA BRAND F CODE	13
TSCA	Yog lawm
HS Code	29156090 ib
Hazard Class	8
Packing Group	III
Toxicity	LD50 iv hauv cov nas: 1290 ± 53 mg / kg (los yog Wretlind)

Taw qhia

N-valeric acid, tseem hu ua valeric acid, yog cov organic compound. Cov hauv qab no yog kev qhia txog cov khoom, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb ntawm n-valeric acid:

Zoo:

N-valeric acid yog cov kua xim tsis muaj xim nrog cov txiv hmab txiv ntoo tsw thiab soluble hauv dej.

Siv:

N-valeric acid muaj ntau yam kev siv hauv kev lag luam. Ib daim ntawv thov loj yog raws li qhov hnyav hauv kev lag luam xws li coatings, dyes, adhesives, thiab lwm yam.

Txoj kev:

Valeric acid tuaj yeem npaj tau los ntawm ob txoj hauv kev. Ib txoj hauv kev yog ua kom qee qhov oxidize pentanol thiab oxygen nyob rau hauv lub xub ntiag ntawm ib tug catalyst los tsim n-valeric acid. Lwm txoj kev yog npaj n-valeric acid los ntawm oxidizing 1,3-butanediol los yog 1,4-butanediol nrog oxygen nyob rau hauv lub xub ntiag ntawm ib tug catalyst.

Cov ntaub ntawv kev nyab xeeb:

Norvaleric acid yog cov kua ua kua thiab yuav tsum tau khaws cia kom deb ntawm cov nplaim taws thiab qhov chaw kub. Thaum tuav thiab siv, nws yog ib qho tsim nyog yuav tsum tau ua cov kev tiv thaiv tsim nyog, xws li hnav tsom iav tiv thaiv, hnab looj tes tiv thaiv thiab khaub ncaws tiv thaiv. N-valeric acid yuav tsum tau muab cia rau hauv lub thawv airtight, kom deb ntawm oxidants thiab khoom noj khoom haus. Yuav tsum tau saib xyuas thaum khaws cia thiab siv kom tsis txhob muaj kev cuam tshuam nrog lwm cov tshuaj.

Yav dhau los: Palmic acid CAS # 57-10-3

Tom ntej: 2-Ethylbutyric acid CAS # 88-09-5

Sau koj cov lus ntawm no thiab xa tuaj rau peb