214736

Xylenes

reagent grade

• Synonyme(s) : Xylene mixture of isomers
• Formule linéaire : C₆H₄(CH₃)₂
• Numéro CAS: 1330-20-7
• Poids moléculaire : 106.17
• Numéro CE : 215-535-7
• Numéro MDL: MFCD00077264
• Code UNSPSC : 12352002
• ID de substance PubChem : 329752157
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: reagent grade
• Niveau de qualité: 100
• Densité de vapeur: 3.7 (vs air)
• Pression de vapeur: 18 mmHg ( 37.7 °C)
• Pureté: ≥75.0% (xylenes isomers)
• Forme: liquid
• Température d'inflammation spontanée: 867 °F
• Limite d'explosivité: 7 %
• Impuretés: ≤25% ethylbenzene
• Indice de réfraction: n20/D 1.497 (lit.)
• Point d'ébullition: 137-140 °C (lit.)
• Pf: -34 °C (lit.)
• Densité: 0.86 g/mL at 25 °C (lit.)
• Chaîne SMILES: Cc1ccc(C)cc1.Cc2cccc(C)c2.Cc3ccccc3C
• InChI: 1S/3C8H10/c1-7-3-5-8(2)6-4-7;1-7-4-3-5-8(2)6-7;1-7-5-3-4-6-8(7)2/h3*3-6H,1-2H3
• Clé InChI: MVZVDAGWAAZJPE-UHFFFAOYSA-N

Description

Description générale

Xylenes is the mixture of isomeric ortho-, meta- and para-forms of xylene. Its dispersed emission and time of flight mass spectra has been reported. Transitions from S_{1 ↔} S₀ states have been found to be within the range of 100cm^-1 and were reported to be arising due to the internal rotation of ring methyl groups. Time-resolvedin situ FTIR spectroscopic and gas chromatographic studies have been carried out to study its diffusion coefficients, adsorption rates and isomerization efficacy over HSZM-5 surfaces.

Application

Xylenes may be employed in chloramphenicol acetyltransferase (CAT) assay to evaluate the CAT gene expression.

Informations sur la sécurité

• Pictogrammes: GHS02,GHS08,GHS07
• Mention d'avertissement: Danger
• Mentions de danger: H226,H304,H312 + H332,H315,H319,H335,H373,H412
• Conseils de prudence: P210 - P273 - P280 - P301 + P310 - P303 + P361 + P353 - P331
• Classification des risques: Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT RE 2 Inhalation - STOT SE 3
• Organes cibles: Central nervous system,Liver,Kidney, Respiratory system
• Code de la classe de stockage: 3 - Flammable liquids
• Classe de danger pour l'eau (WGK): WGK 2
• Point d'éclair (°F): 77.0 °F - closed cup
• Point d'éclair (°C): 25 °C - closed cup