P-Cresol (CAS # 106-44-5)

Chemical Property:

Molecular Formula	c7h8 ua
Molar Mass	108.14 Nws
Qhov ntom	1.034g / mLat 25 ° C (lit.)
Melting Point	32-34 ° C (lit.)
Boling Point	202 ° C (lit.)
Flash Point	193 ° F
JECFA Number	693 ib
Dej Solubility	20 g / L (20 ºC)
Solubility	20 g / l
Vapor Siab	1 hli Hg (20 ° C)
Vapor Density	3.72 (vs huab cua)
Qhov tshwm sim	Crystalline khoom los yog kua
Specific Gravity	1.0341 (20/4 ℃)
Xim	Tsis muaj xim rau lub teeb daj, tuaj yeem tsaus ntuj thaum raug lub teeb
Exposure Limit	NIOSH REL: TWA 2.3 ppm (10 mg/m3), IDLH 250 ppm; OSHA PEL: TWA 5ppm (22 mg/m3); ACGIH TLV: TWA rau tag nrho cov isomers 5 ppm (tau txais).
Merck	14 Ib., 2579
BRN	13 05151
pKa	10.17 (ntawm 25 ℃)
Kev cia khoom	Khaws hauv qab +30 ° C.
Kev ruaj ntseg	ruaj khov. Hluav taws kub. Incompatible nrog muaj zog oxidizing neeg sawv cev. Cua thiab lub teeb-sensitive. Hygroscopic.
rhiab heev	Lub teeb Sensitive
Explosive txwv	1% (V)
Refractive Index	ND20 1.5395
Physical thiab Chemical Properties	Cov khoom no tsis muaj xim tsis muaj pob tshab kua lossis siv lead ua, nrog phenol tsw, flammable. Soluble hauv ethanol, ether, chloroform thiab dej kub, boiling point 202℃, yaj 35.26℃.
Siv	Cov khoom no yog tsim los ntawm antioxidant 2, 6-di-tert-butyl-p-cresol thiab roj hmab antioxidant raw cov ntaub ntawv, tib lub sij hawm, tab sis kuj zus tau tej cov tshuaj TMP thiab dyes muaj nyob rau hauv lub hauv paus ntawm tseem ceeb raw cov ntaub ntawv.

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Khoom cim npe

Risk Codes	R24/25 - R34 - Ua rau kub hnyiab R39/23/24/25 - R23/24/25 – Toxic los ntawm inhalation, nyob rau hauv kev sib cuag nrog daim tawv nqaij thiab yog hais tias nqos.
Kev nyab xeeb piav qhia	S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. 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.) S36/37 - Hnav cov khaub ncaws tiv thaiv thiab hnab looj tes tsim nyog.
UN IDs	UN 3455 6.1/PG 2
WGK Germany	1
RTECS	ib 6475000
FLUKA BRAND F CODE	8
TSCA	Yog lawm
HS Code	29071200 ib
Kev Ceeb Toom	Irritant
Hazard Class	6.1
Packing Group	II
Toxicity	LD50 qhov ncauj hauv nas: 1.8 g / kg (Deichmann, Witherup)

Taw qhia

Cresol, tshuaj hu ua methylphenol (English lub npe Cresol), yog ib qho organic compound. Cov hauv qab no yog kev qhia txog cov khoom, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb ntawm p-toluenol:

Zoo:

Cov tsos mob: Cresol yog cov kua tsis muaj xim los yog daj daj nrog cov phenolic tshwj xeeb aroma.

Solubility: Nws yog soluble hauv cawv, ethers thiab ethers, thiab me ntsis soluble hauv dej.

Cov khoom siv tshuaj: Cresol yog cov tshuaj acidic uas ua rau cov alkali tsim cov ntsev sib xws.

Siv:

Muaj kev siv: Cresol yog siv los ua cov tshuaj tua kab mob, tshuaj tua kab mob, thiab hnyav hauv kev tsim cov tshuaj tua kab mob. Nws kuj ua raws li catalyst thiab hnyav nyob rau hauv cov roj hmab thiab resin industries.

Kev siv Agricultural: Toluene tuaj yeem siv rau hauv kev ua liaj ua teb ua tshuaj tua kab thiab fungicide.

Txoj kev:

Muaj ntau ntau txoj hauv kev los npaj toluenol, ib qho ntawm feem ntau siv kom tau txais nws los ntawm cov tshuaj tiv thaiv oxidation ntawm toluene. Cov kauj ruam tshwj xeeb yog thawj zaug hnov mob toluene nrog oxygen los tsim toluol nyob rau hauv qhov kev txiav txim ntawm lub catalyst.

Cov ntaub ntawv kev nyab xeeb:

Cresol yog tshuaj lom, thiab kev sib cuag ncaj qha lossis nqus tau cov cresol ntau tuaj yeem ua rau muaj kev phom sij rau kev noj qab haus huv. Cov txheej txheem kev nyab xeeb cuam tshuam yuav tsum tau ua raws li thaum siv, thiab cov cuab yeej tiv thaiv tsim nyog yuav tsum tau siv.

Tsis txhob sib cuag nrog daim tawv nqaij ntev thiab tsis txhob nqus nws cov vapors.

Thaum khaws cia thiab tuav cov toluenol, nws yuav tsum tau muab kaw kom zoo thiab khaws cia kom deb ntawm qhov hluav taws kub thiab kub.

Yav dhau los: Phenol CAS Nr 108-95-2

Tom ntej: Ethyl Maltol (CAS # 4940-11-8)

Sau koj cov lus ntawm no thiab xa tuaj rau peb