0 %%EOF ��fi�h�g`�2` ����Vd`IՀ�2���H�0�\��20* yR.� The oxidation of toluene forms benzaldehyde which can further be oxidized to form benzoic acid. 668 0 obj <> endobj In winter, the lifetime of toluene can be several months; in summer, several days. �S֦+�T�t�C�٬�E��ʇ"�j���q�mMX�oڪf�x����`���e;)��>/�M^��&w�i^7�d�kH����!g�7 �t�y56P�}߮�������؈��J��Ep��! Toluene is added to gasoline, used to produce benzene, and used as a solvent. ��ښ#��K����(��m3��2ԝ�#y�{�\L0�,s�`6��,��i 5Ӓ� 3�C�2�tLJG�I��L���J�&a^��pP$�(��'E3圁b� endstream endobj startxref Ch17 Reactions of Aromatic Compounds (landscape).docx Page11 Nitration of Toluene Previously we have concentrated on the reactions of benzene. 687 0 obj <>/Filter/FlateDecode/ID[]/Index[668 39]/Info 667 0 R/Length 98/Prev 198564/Root 669 0 R/Size 707/Type/XRef/W[1 3 1]>>stream �2���^r���$Q�� �$S�݅�+f`Te`X�lǸ�1�Q��;c)S�Q c��5���K�1����n�� 1887 0 obj <>/Filter/FlateDecode/ID[<16961500FBC7EA4CB1FE3610F5E13CCD>]/Index[1869 33]/Info 1868 0 R/Length 92/Prev 280635/Root 1870 0 R/Size 1902/Type/XRef/W[1 2 1]>>stream 1869 0 obj <> endobj h��WmO�8�O�G���qrZ�k=*QQ8N��`B�f7M�$�~�f�ؤ]XV�Iw�t�=�����C��qL9��8�>|�&2āOT�f �f�0P8�4�Ub� 8�p��2� ���a$B�4 9��2����{6�`���/����ظ�ﳚ�P~t�O���o�)���,m�BxJ�0Q����8�䉗��-�z����ʖ�l��k1�Y^~�r�ʲj��,��0|HJ�$�=/ ^�d��d���O'05����n������yU�u�&����ʇ�9n{D! Exposure to toluene may occur from breathing ambient or indoor air affected by such sources. 3.4 Effect of reaction time on toluene oxidation: The reaction profile during the oxidation of toluene with hydrogen peroxide over ]Cu(CNMP) 2 H2 O[ Schiff base catalyst has been studied. %PDF-1.5 %���� :���������&�b8��}i��� 0b�@1 58 / Monday, March 26, 2012 / Rules and Regulations Date of issue: 03/21/2014 Revision date: … 77, No. pn�_Po cz���9�~�����QoA��Qbb�fP�1�ƈ!�:��O/&�O~0V��LD� d��&~�� N��pt�-�ۺ����Cw�.f?���>�=��N-���^��|��2�He�. TOLUENE Maximum concentration 500 ppm N/A OSHA Z2 TOLUENE TWA 200 ppm N/A OSHA Z2 TOLUENE TWA 20 ppm N/A ACGIH NOTE: Limits/standards shown for guidance only. endstream endobj 1870 0 obj <>/Metadata 50 0 R/Outlines 65 0 R/PageLayout/OneColumn/Pages 1867 0 R/StructTreeRoot 180 0 R/Type/Catalog>> endobj 1871 0 obj <>/ExtGState<>/Font<>/XObject<>>>/Rotate 0/StructParents 0/Type/Page>> endobj 1872 0 obj <>stream Benzene derivatives in a general sense react in the same way that benzene does, although there are some interesting differences. h�bbd``b`�$f ��@�u;�`I聸 �^ �b"�A\$U�W4��:$���w�hf`bd�2���\����_ = < 1901 0 obj <>stream endstream endobj startxref The variations of reaction products with time are measured and the results are shown in Fig5. %PDF-1.5 %���� Together with other emitted pollutants associated with smog production, toluene may contribute significantly to the causation of smog. Furthermore, the intermediate species of MTO side reaction are prone to be transformed into coke and deposited onto 706 0 obj <>stream h�bbd```b``z"���gA$K2�d��;��`�����ti2��D*%��A$��� ���`�U���CL�L� ������� ��K f��h� �ցC;�1����@,`Ta�c�4�i��?a9��a{� ���\N endstream endobj 669 0 obj <>/Metadata 38 0 R/Pages 666 0 R/StructTreeRoot 42 0 R/Type/Catalog/ViewerPreferences 688 0 R>> endobj 670 0 obj <>/MediaBox[0 0 595.32 841.92]/Parent 666 0 R/Resources<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]/XObject<>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> endobj 671 0 obj <>stream Reaction with hydroxyl radicals in the troposphere represents the principal mechanism by which toluene is removed (8). �Fi00����' ��i� The recent detection of benzonitrile in the interstellar medium, believed to be produced by the reaction of CN and benzene, has ignited interest in studying these reactions. h�b```� ,\^� ��ea�� xU�x����� �8��2'3.nP{0Q@&���7���? To restrain the side reactions, researchers modified zeolites with the oxides of Mg, P, Si, and so on (6–8) or performed the reaction at a high toluene/methanol molar ratio of 4:6, causing limited conver-sion of toluene. Toluene Safety Data Sheet according to Federal Register / Vol. CN is known for its fast reactions with hydrocarbons at low temperatures, but relatively few studies have focused on the reactions between CN and aromatic molecules. As toluene is an aromatic compound, it is less susceptible towards oxidation reaction. %%EOF �C�P�c���~Q��ٶ_�&E��Y���w:���j�ʖ|�]�|��܌����,c�����Y��ֳ�lXH$���x(��#3B��l�>/� ������JILJ�lQ3���*�^�zJ�,�Nc8�q4c�U�'�*����UV�6��ġ�vq#5ٲ�u��&����o���!���&_}Ą��y�)�M��v�*+:��)�>�s����rV�6��(�e]��Ŧn������M"����I/y. h�b```�~^!b`f`�s�vza n�l��wE|��n1���m�Du�"B6�L:� The central nervous system (CNS) is the primary target organ for toluene toxicity in both humans and animals for acute (short-term) and chronic (long-term) exposures. Follow applicable regulations. }�s�|�2�r�|i[���X��_�����4��9���i�?�Z���g�ҡ$�����eӪl�����0��YÞ�&��Y��u^|=չ.�͹^��q>�2 The methyl group of toluene is a side chain in the aromatic ring structure and is oxidized to the carboxyl group in the presence of a strong oxidizing agent. h��Vmo�6�+��b��"�0`�vj�Ɇ�k 0