4-Hydroxybenzoic acid (CAS # 99-96-7)

Chemical Property:

Molecular Formula	C7H6O3
Molar Mass	138.12 Nws
Qhov ntom	1,46 g / cm3
Melting Point	214-217 ℃
Boling Point	336.2 ° C ntawm 760 mmHg
Flash Point	171.3°C dej
Dej Solubility	5 g / L (20 ℃)
Solubility	Me ntsis soluble nyob rau hauv dej, chloroform, soluble nyob rau hauv ether, acetone thiab benzene, soluble nyob rau hauv ethanol nyob rau hauv txhua feem, yuav luag insoluble nyob rau hauv carbon disulfide. Dissolve nyob rau hauv 125 qhov chaw ntawm dej txias.
Vapor Siab	4.48E-05mmHg ntawm 25 ° C
Qhov tshwm sim	Dawb rau Beige Crystalline hmoov
Kev cia khoom	2-8 ℃
rhiab heev	Sensitive rau lub teeb
Refractive Index	1.4600 (kwv yees)
MDL	PAB 00002547
Physical thiab Chemical Properties	Cov khoom ntawm cov hmoov dawb Crystal, tasteless, tsw, saj thaum tus nplaig loog loog Soluble hauv dej kub thiab cawv, ether, acetone, micro-soluble hauv dej txias, benzene, insoluble hauv carbon disulfide. Dissolved nyob rau hauv 125 qhov chaw ntawm dej txias
Siv	Feem ntau yog cov khoom siv raw ntawm cov khoom siv tshuaj zoo, parabens (parabens) ua zaub mov, tshuaj thiab tshuaj pleev ib ce preservatives, tau dav siv, nws kuj yog siv dav hauv kev npaj ntau yam dyes, fungicides, xim zaj duab xis thiab ntau yam roj- soluble xim tsim cov neeg ua haujlwm, thiab lwm yam, nrog rau ntau yam kev siv ntawm cov tshiab kub resistant polymer P-Hydroxybenzoic acid polyester kuj yog ib qho yooj yim raw khoom.

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Product Detail

Khoom cim npe

Hazard Cov Cim	Xi-xaj
Risk Codes	R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij.
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. S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag

4-Hydroxybenzoic acid (CAS Nr .: 99-96-7) qhia
Hydroxybenzoic acid, tseem hu ua p-hydroxybenzoic acid, yog cov organic compound.

Nws cov khoom tseem ceeb yog raws li nram no:

Lub cev muaj zog: Hydroxybenzoic acid yog dawb los yog daj me ntsis siv lead ua nrog cov ntxhiab tsw ntxhiab tsw.

Cov khoom siv tshuaj: Hydroxybenzoic acid yog me ntsis soluble hauv dej thiab soluble hauv cawv. Nws yog ib qho acidic carboxylic acid uas tuaj yeem tsim cov ntsev nrog cov hlau. Nws tuaj yeem cuam tshuam nrog aldehydes lossis ketones, dhau los ua cov tshuaj tiv thaiv condensation, thiab tsim cov tshuaj ether.

Reactivity: Hydroxybenzoic acid tuaj yeem ua rau cov tshuaj tiv thaiv tsis zoo nrog alkali los ua benzoate ntsev. Nws tuaj yeem koom nrog esterification cov tshuaj tiv thaiv nyob rau hauv acid catalysis los tsim p-hydroxybenzoate ester. Hydroxybenzoic acid kuj yog ib qho nruab nrab ntawm cov nroj tsuag kev loj hlob regulators.

Daim ntawv thov: Hydroxybenzoic acid tuaj yeem siv los ua kom cov nroj tsuag loj hlob regulators, dyes, fragrances, thiab lwm yam tshuaj.

Yav dhau los: Fatty acids (CAS # 85536-27-0)

Tom ntej: Ketone (CAS # 28940-11-6)

Sau koj cov lus ntawm no thiab xa tuaj rau peb