Mesitylene (CAS # 108-67-8)

Chemical Property:

Molecular Formula	C9H12
Molar Mass	120.19 Nws
Qhov ntom	0.864 g / mL ntawm 25 ° C (lit.)
Melting Point	-45 ° C
Boling Point	163-166 ° C (lit.)
Flash Point	112 ° F
Dej Solubility	2.9 g / L (20 ºC)
Solubility	Miscible nrog cawv, benzene, ether (Windholz li al., 1983), thiab trimethylbenzene isomers.
Vapor Siab	14 hli Hg (55 ° C)
Vapor Density	4.1 (vs huab cua)
Qhov tshwm sim	Ua kua
Xim	Ntshiab xim tsis muaj xim
Exposure Limit	NIOSH REL: TWA 25 ppm (125 mg/m3); ACGIH TLV: TWA rau mixedisomers 25 ppm (tau txais).
Merck	14, 5907 ib
BRN	9 06806
pKa	> 14 (Schwarzenbach et al., 1993)
Kev cia khoom	2-8 ° C
Kev ruaj ntseg	ruaj khov. Hluav taws kub. Incompatible nrog muaj zog oxidizing neeg sawv cev.
Explosive txwv	0.88-6.1%, 100 ° F
Refractive Index	n20/D 1.499 (lit.)
Physical thiab Chemical Properties	Cim: tsis muaj xim tsis muaj pob tshab kua. melting point -44.7 ℃ (α-hom), -51 ℃ Kub taw tes 164.7 ℃ txheeb ze ntom ntom 0.8652 Refractive Index 1.4994 flash point 44 ℃ solubility insoluble nyob rau hauv dej, soluble nyob rau hauv ethanol, yuav yaj nyob rau hauv txhua feem ntawm benzene, ether, acetone.
Siv	Rau zus tau tej cov trimesic acid thiab antioxidants, epoxy resin curing neeg sawv cev, polyester resin stabilizer, alkyd resin plasticizer thiab dye

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Risk Codes	R10 - Flammable R37 - Ua rau khaus khaus ua pa R51/53 - Cov tshuaj lom rau cov kab mob hauv dej, tuaj yeem ua rau muaj kev cuam tshuam ntev rau hauv dej hiav txwv. 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. R11 - Cov nplaim hluav taws kub heev R37/38 - Kab mob ua pa thiab tawv nqaij.
Kev nyab xeeb piav qhia	S61 - Tsis txhob tso tawm rau ib puag ncig. Xa mus rau cov lus qhia tshwj xeeb / cov ntaub ntawv kev nyab xeeb. 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. S16 - Khaws kom deb ntawm qhov chaw hluav taws xob. S7 - Khaws lub thawv kaw kom nruj.
UN IDs	UN 2325 3/PG 3
WGK Germany	2
RTECS	OX6825 000
FLUKA BRAND F CODE	10
TSCA	Yog lawm
HS Code	29029080 ib
Kev Ceeb Toom	Irritant / Flammable
Hazard Class	3
Packing Group	III
Toxicity	LD50 (inhalation) rau nas 24 g/m3/4-h (quoted, RTECS, 1985).

Taw qhia

Zoo:

- Methylbenzene yog cov kua tsis muaj xim nrog cov ntxhiab tsw ntxhiab tsw.

- Trimethylbenzene yog insoluble hauv dej thiab soluble hauv cov kuab tshuaj organic xws li cawv, ethers thiab ketone cov kuab tshuaj.

Siv:

-M-trimethylbenzene yog siv los ua cov kuab tshuaj hauv cov organic synthesis.

- Siv nyob rau hauv kev npaj ntawm flavors, pigments, dyes thiab fluorescents.

- Rau kev npaj ntawm inks, tshuaj ntxuav thiab coatings.

Txoj kev:

- Methylbenzene tuaj yeem npaj los ntawm toluene los ntawm alkylation. Ib txoj hauv kev zoo tshaj plaws yog kom hnov mob toluene nrog methane nyob rau hauv cov xwm txheej ntawm lub catalyst thiab tsim nyog kub los tsim homoxylene.

Cov ntaub ntawv kev nyab xeeb:

- Trimethylbenzene muaj qee yam tshuaj lom thiab khaus khaus ntawm daim tawv nqaij thiab qhov muag.

- Trimethylbenzene yog nplaim taws thiab yuav tsum khaws cia kom deb ntawm cov nplaim taws thiab qhov kub thiab txias. Ua tib zoo saib xyuas kev tiv thaiv hluav taws thaum khaws cia thiab siv.

- Thaum siv x-trimethylbenzene, muab qhov cua zoo thiab tsis txhob nqus nws cov vapors.

Yav dhau los: 2,4,6-Trimethylnitrobenzene radical anion (CAS # 34505-32-3)

Tom ntej: 4-Hydroxybenzyl cawv (CAS # 623-05-2)

Sau koj cov lus ntawm no thiab xa tuaj rau peb