Xylener
Xylener er en hvilken som helst af tre isomerer af dimethylbenzen eller en kombination deraf. Alle er farveløse, brandfarlige væsker sammensat af en central benzenring med to methylgrupper knyttet til substituenter. De kan anvendes som prækursorkemikalier og opløsningsmidler.
Xylener er brandfarlige petrokemiske produkter, der kan fremstilles via katalytisk reformering og kulkarbonisering under koksproduktion og findes i råolie, benzin og flybrændstof. Xylener blev først isoleret fra trætjære og navngivet af den franske kemiker Auguste Cahours.
Hvad er Xylene?
Xylen, mere passende kaldet xylener, refererer til enhver enkelt eller kombination af de tre isomerer af dimethylbenzen. De isomere former betegnes som ortho- (o-), meta- (m-) og para- (p-), en reference til carbonet i benzenringen, hvortil de to methylgrupper er knyttet.
- o-isomer: 1,2-dimethylbenzen
- m-isomer: 1,3-dimethylbenzen
- p-isomer: 1,4-dimethylbenzen
Xylener er farveløse og kan påvises ved lugt i koncentrationer så lave som 0,08 til 3,7 ppm i luft og smages i vand ved 0,53 til 1,8 ppm.
Se analysecertifikatet eller sikkerhedsdatabladet for specifik information om xylendensitet og sikkerhedsrisici.
Hvad bruges xylen til?
Industrielle anvendelser
p-Xylen er en forløber for terephthalsyre og dimethylterephthalat, der bruges til fremstilling af polyethylenterephthalat plastflasker og polyesterbeklædning.
Xylen kan bruges som opløsningsmiddel og er en almindelig komponent i blæk, gummi, klæbemidler og maling- og lakfortyndere. Xylener kan bruges til at rense stål, siliciumskiver og integrerede kredsløb. Medicinske anvendelser omfatter brug som opløsningsmiddel af dentale materialer og ørevoks.
Laboratoriebrug
Xylen kan bruges med tøris i bade, til at fjerne olie fra mikroskopobjektiver og som rengøringsmiddel eller monteringsmateriale i histologiske procedurer.
o-Xylene, 99%
CAS: 95-47-6 Molekylær formel: C8H10 Molekylvægt (g/mol): 106.17 MDL nummer: MFCD00008519 InChI nøgle: CTQNGGLPUBDAKN-UHFFFAOYSA-N Synonym: o-xylene,1,2-dimethylbenzene,ortho-xylene,o-xylol,o-methyltoluene,o-dimethylbenzene,2-xylene,3,4-xylene,benzene, 1,2-dimethyl,o-xylenes PubChem CID: 7237 ChEBI: CHEBI:28063 IUPAC navn: 1,2-xylen SMIL: CC1=CC=CC=C1C
m-Xylene, 99%
CAS: 108-38-3 Molekylær formel: C8H10 Molekylvægt (g/mol): 106.17 MDL nummer: MFCD00008536 InChI nøgle: IVSZLXZYQVIEFR-UHFFFAOYSA-N Synonym: m-xylene,1,3-dimethylbenzene,m-xylol,m-dimethylbenzene,meta-xylene,m-methyltoluene,3-xylene,benzene, 1,3-dimethyl,1,3-dimethylbenzol,santosol 150 PubChem CID: 7929 ChEBI: CHEBI:28488 IUPAC navn: 1,3-xylen SMIL: CC1=CC(C)=CC=C1
2,5-Dimethylaniline, 98+%
CAS: 95-78-3 Molekylær formel: C8H11N Molekylvægt (g/mol): 121.18 MDL nummer: MFCD00007743 InChI nøgle: VOWZNBNDMFLQGM-UHFFFAOYSA-N Synonym: 2,5-xylidine,p-xylidine,2,5-dimethylphenylamine,2-amino-1,4-xylene,2,5-dimethylbenzenamine,benzenamine, 2,5-dimethyl,5-methyl-o-toluidine,6-methyl-m-toluidine,1-amino-2,5-dimethylbenzene,p-dimethylaniline PubChem CID: 7259 ChEBI: CHEBI:518305 IUPAC navn: 2,5-dimethylanilin SMIL: CC1=CC=C(C)C(N)=C1
2,6-Dimethylphenyl isocyanate, 98%
CAS: 28556-81-2 Molekylær formel: C9H9NO Molekylvægt (g/mol): 147.18 MDL nummer: MFCD00002012 InChI nøgle: YQLRKXVEALTVCZ-UHFFFAOYSA-N Synonym: 2,6-dimethylphenyl isocyanate,benzene, 2-isocyanato-1,3-dimethyl,2,6-dimethylphenylisocyanate,2,6-xylyl isocyanate,unii-2ql5mu0e0c,2ql5mu0e0c,isocyanic acid 2,6-dimethylphenyl ester,2,6-dimethylbenzenisocyanate,2,6-dimethyl phenyl isocyanate,2-isocyanato-1,3-dimethyl-benzene PubChem CID: 98787 IUPAC navn: 2-isocyanato-1,3-dimethylbenzen SMIL: CC1=CC=CC(C)=C1N=C=O
Xylenes, mixed, 97+%
CAS: 1330-20-7 Molekylær formel: C8H10 MDL nummer: MFCD00077264 Synonym: Dimethylbenzenes + ethylbenzene
3,4-Dimethylanisole, 99%
CAS: 4685-47-6 Molekylær formel: C9H12O Molekylvægt (g/mol): 136.194 MDL nummer: MFCD00008396 InChI nøgle: LVUBSVWMOWKPDJ-UHFFFAOYSA-N Synonym: 3,4-dimethylanisole,4-methoxy-1,2-dimethyl-benzene,4-methoxy-o-xylene,benzene, 4-methoxy-1,2-dimethyl,3,4-dimethyl anisole,1,2-dimethyl-4-methoxybenzene,3,4-dimethylphenyl methyl ether,acmc-20anel,pubchem5361 PubChem CID: 78411 IUPAC navn: 4-methoxy-1,2-dimethylbenzen SMIL: CC1=C(C=C(C=C1)OC)C
3,4-Dimethylbenzoic acid, 98%
CAS: 619-04-5 Molekylær formel: C9H10O2 Molekylvægt (g/mol): 150.177 MDL nummer: MFCD00002524 InChI nøgle: OPVAJFQBSDUNQA-UHFFFAOYSA-N Synonym: benzoic acid, 3,4-dimethyl,3,4-dimethyl-benzoic acid,1-carboxy-3,4-dimethylbenzene,o-xylene-4-carboxylic acid,3,4-dimethylbenzoicacid,pubchem14893,3,4-dimethyl benzoic acid,asym-o-xylylic acid,acmc-1b5p1,3, 4 dimethyl benzoic acid PubChem CID: 12073 ChEBI: CHEBI:64818 IUPAC navn: 3,4-dimethylbenzoesyre SMIL: CC1=C(C=C(C=C1)C(=O)O)C
4,5-dimethyl-2-nitroanilin, 97 %, Thermo Scientific Chemicals
CAS: 6972-71-0 Molekylær formel: C8H10N2O2 Molekylvægt (g/mol): 166.18 MDL nummer: MFCD00007811 InChI nøgle: PINGKGKKUSYUAW-UHFFFAOYSA-N Synonym: 6-nitro-3,4-xylidine,benzenamine, 4,5-dimethyl-2-nitro,3,4-xylidine, 6-nitro,2-nitro-4,5-dimethylaniline,4,5-dimethyl-2-nitrophenylamine,2-nitro-4,5-xylidine,3,4-dimethyl-6-nitroaniline,acmc-20amrx,3, 6-nitro,4-amino-5-nitro-o-xylene PubChem CID: 81445 IUPAC navn: 4,5-dimethyl-2-nitroanilin SMIL: CC1=CC(=C(C=C1C)[N+](=O)[O-])N
2-Bromo-p-xylene, 98+%
CAS: 553-94-6 Molekylær formel: C8H9Br Molekylvægt (g/mol): 185.06 MDL nummer: MFCD00000074 InChI nøgle: QXISTPDUYKNPLU-UHFFFAOYSA-N Synonym: 2,5-dimethylbromobenzene,2-bromo-p-xylene,1-bromo-2,5-dimethylbenzene,benzene, 2-bromo-1,4-dimethyl,bromo-p-xylene,2-bromo-1,4-dimethyl-benzene,2,5-xylyl bromide,2-bromo-1,4-xylene,2,5-dimethylphenyl bromide,p-xylene, 2-bromo PubChem CID: 11121 IUPAC navn: 2-brom-1,4-dimethylbenzen SMIL: CC1=CC=C(C)C(Br)=C1
2,6-Dimethylaniline, 99%
CAS: 87-62-7 Molekylær formel: C8H11N Molekylvægt (g/mol): 121.18 MDL nummer: MFCD00007747 InChI nøgle: UFFBMTHBGFGIHF-UHFFFAOYSA-N Synonym: 2,6-xylidine,2-amino-m-xylene,o-xylidine,2,6-dimethylbenzenamine,2-amino-1,3-dimethylbenzene,2,6-dimethylphenylamine,benzenamine, 2,6-dimethyl,2,6-xylylamine,2-amino-1,3-xylene,1-amino-2,6-dimethylbenzene PubChem CID: 6896 ChEBI: CHEBI:28738 IUPAC navn: 2,6-dimethylanilin SMIL: CC1=CC=CC(C)=C1N
N,N,3,5-Tetramethylanilin, 98 %, Thermo Scientific Chemicals
CAS: 4913-13-7 Molekylær formel: C10H15N Molekylvægt (g/mol): 149.237 MDL nummer: MFCD00008307 InChI nøgle: NBFRQCOZERNGEX-UHFFFAOYSA-N Synonym: benzenamine, n,n,3,5-tetramethyl,n,n-dimethyl-3,5-xylidine,3,5-xylidine, n,n-dimethyl,3,5-dimethylphenyl dimethylamine,acmc-209kew,5-dimethylamino-m-xylene,3,5,n,n-tetramethylaniline,n,n-dimethyl-sym-m-xylidine,n,n,3,5-tetramethyl aniline,n,n-3,5-tetramethylbenzenamine PubChem CID: 78625 IUPAC navn: N,N,3,5-tetramethylanilin SMIL: CC1=CC(=CC(=C1)N(C)C)C
2,5-dimethylbenzenboronsyre, 98 %, Thermo Scientific Chemicals
CAS: 85199-06-0 Molekylær formel: C8H11BO2 Molekylvægt (g/mol): 149.98 MDL nummer: MFCD01863525 InChI nøgle: OOMZKLJLVGQZGV-UHFFFAOYSA-N Synonym: 2,5-dimethylphenyl boronic acid,2,5-dimethylbenzeneboronic acid,2,5-dimethylphenylboronicacid,2,5-dimethylphenyl boranediol,p-xylene-2-boronic acid,boronic acid, 2,5-dimethylphenyl,pubchem1831,p-xyleneboronic acid,ksc448a1r,2,5-dimehylphenylboronic acid PubChem CID: 2734347 IUPAC navn: (2,5-dimethylphenyl)borsyre SMIL: CC1=CC=C(C)C(=C1)B(O)O
4-Chloro-2,6-dimethylaniline, 96%
CAS: 24596-18-7 Molekylær formel: C8H10ClN Molekylvægt (g/mol): 155.625 MDL nummer: MFCD01076576 InChI nøgle: JCLZLZKUISPXDC-UHFFFAOYSA-N Synonym: 4-chloro-2,6-dimethyl-phenylamine,4-chloro-2,6-dimethylbenzenamine,2,6-dimethyl-4-chloroaniline,intermediates-zcf02661,acmc-20a53k,4-chlor-2,6-dimethylanilin,pharmabridge p-1739,4-chloro-2,6-dimethyl-aniline,4-chloro-2,6-xylidine,4-chloro-2,6-dimethylphenylamine PubChem CID: 5073362 IUPAC navn: 4-chlor-2,6-dimethylanilin SMIL: CC1=CC(=CC(=C1N)C)Cl
3-Chloro-2,6-dimethylaniline, 99%
CAS: 26829-77-6 Molekylær formel: C8H10ClN Molekylvægt (g/mol): 155.625 MDL nummer: MFCD02683086 InChI nøgle: FGMXFOTYCHZCLA-UHFFFAOYSA-N Synonym: 3-chloro-2,6-dimethyl-phenylamine,acmc-20an7h,3-chloro-2,6-xylidine,3-chloro-2,6-dimethylphenylamine,3-chloranyl-2,6-dimethyl-aniline,benzenamine,3-chloro-2,6-dimethyl PubChem CID: 7023016 IUPAC navn: 3-chlor-2,6-dimethylanilin SMIL: CC1=C(C(=C(C=C1)Cl)C)N
2,2',5,5'-Tetramethylbiphenyl, 98%
CAS: 3075-84-1 Molekylær formel: C16H18 Molekylvægt (g/mol): 210.32 MDL nummer: MFCD00151846 InChI nøgle: ZHTROMYSDSTCCE-UHFFFAOYSA-N PubChem CID: 137818 IUPAC navn: 2-(2,5-dimethylphenyl)-1,4-dimethylbenzen SMIL: CC1=CC=C(C)C(=C1)C1=CC(C)=CC=C1C