1993a Styrene 4 Gn Pig 3-40 hr 1300 (100% mortality after 40 hours exposure) Spencer et al. The odor detection threshold for styrene has been found to be 70 μg/m 3. They are used as solvents and in making paints, adhesives and other chemicals. ��/�@����ImW���&���]. [ACGIH] "More recent studies by Triebig et al. Odor detection thesholds, Odour. The “amount” of odour present in a sample of air. New Window. �X���_�ͥy`(s�q�%���RL���2��Oҗ�=P������b�^ҏuY`j7}k6�Q���̹'m���`�>ҝ�[)߳i�9~�/�G�#S9�*ܮ�g'�M+�2�ێ� Odor: CHARACTERISTIC STYRENE Odor Threshold: pH: -N/A -N/A Freezing Point: -N/A Water Solubility : INSOLUBLE Coefficient of Water/Oil Distribution: -N/A Mechanical Impact Explosion: NO KNOWN HAZARD Static Electricity Explosion: AVOID STATIC CHARGE % HAP BY WEIGHT 100.000 % MONOMER BY WEIGHT 100.000 SECTION IV FIRE AND EXPLOSION HAZARD DATA CAS number: 100–42–5 NIOSH REL: 50 ppm (215 mg/m 3) TWA, 100 ppm (425 mg/m 3) STEL Current OSHA PEL: 100 ppm TWA, 200 ppm CEILING, 600 ppm 5-minute MAXIMUM PEAK IN ANY 3 HOURS. IARC. More usually a mixture of compounds are present and the concentration of the mixture can be expressed in odour units per cubic metre (ou E). Styrene is the precursor to polystyrene and several copolymers. Styrene 3 Mouse (B6C3F1) 6 hr/d 14 d 250 M (44% mortality) Morgan et al. The odor threshold is defined as the first concen- tration at which all panel members can recognize the odor. �u�j2Ɔ&���sO0�5��14�#�!�ș� �Q�,��}(�=\���F޽��J�4d�㲳*����W�Z� {:�;����&��-ΰ� �IH���K��a���0Vh��a�Q�*�z,�v؁������8c�_ �2<0��Ć�2 &��u���� IDj3�K�*҆njq�$�ۼIj^�v�m�ږp�b�F�1SEy�b� `-К���y�u�`�o÷We$��M��mw��wZ�MK��QŜ%��q�A���t@�*V���&al XVFdh(��G�����&��!I9Nx��f%yy9�{o@� 3rd ed., Volumes 1-26. Compilation of Odor and Taste Threshold Values Data. On average, the styrene odor detection threshold for the Exposed group was almost 10 times higher than that of the Comparison group (56 vs. 6 ppm, respectively). Styrene produces a noticeable smell at levels far below the most conservative regulatory exposure limits. (ed.). %PDF-1.6 %���� 3133. The odoranfs were presented to a trained odor panel in a static air system utiliz- ing a low odor background air as the dilution medium. ���#��A(�g>���l#ku��'��(� ���0�xyp���ğ�{�^Lg?B�X���ǜӅ�����o������Yh@K�S.g���g�]ɛZ�I�P!�3�P>��A7%���'Ӭ� Body Protection: Complete suit protecting against chemicals. (6) The chemical formula for styrene is C 8 H 8, and the molecular weight is 104.16 g/mol. The ACMA recommended that the TS set the styrene odor-based ESL at 1,200 µg/m3. It can be expressed in terms of ppm, ppb or in mg/m 3 of air for a single odorous compound. (2009) and Sisto et al. The exposed workers were tested in a styrene-free environment (< 1 ppm styrene) during the period of their regular 8-h or 10-h work shift. ^���tyw��s��lG�8��GM �I�°W �����n�ڠE������1�s",xA�r�~C�0�k`��\���2�1p�j�)W;�q�&,�V�T�-�����4���� K�r�?�9� %%EOF �(Ȑ-O~���F� �Fd�S^�x�D���� ��R҉����7(@�J}Ź�Cgrќi�O?�1dw���W�{����Dɍ�P���C>�����)���V8�T�H�7�~(��?�$N� E6-� d�;1m�e��AY!�4k`r6`��1“�K` Reactive with strong oxidizing agents. Styrene [‘stī-,rēn] is a clear, colorless liquid that is synthesized for commercial use from petroleum and natural gas by-products. Styrene has a distinctive strong odor and humans have a low threshold of detection (the lowest concentration at which a chemical can be detected). 1989 OSHA PEL: 50 ppm (215 mg/m 3) TWA, 100 ppm (425 mg/m 3) STEL 1993-1994 ACGIH TLV: 50 ppm (213 mg/m 3) TWA, 100 ppm (426 mg/m 3) CEILING [skin]. (1) The vapor pressure for styrene is 5 mm Hg at 20 °C, and its octanol/water partition coefficient (log K … Kirk-Othmer Encyclopedia of Chemical Technology. 2001). (1) The vapor pressure for styrene is 5 mm Hg at 20 C, and its octanol/water partition coefficient (Log K ow) is 2.95. 3.2.14 Odor Threshold. (1) Ethylbenzene is a colorless liquid that smells like gasoline. Isobutylmethylpyrazine; 2-Isobutyl-3-methylpyrazine; 35-130 ��f_4�����P����͐����׽}�H�����H����j�Wr(b�/M͡{iq�B�6G^O~a�"�#(�^�g`��ެ��;9 ��3\� �M�2��S�c�YT-)��,�x�nܦn�h3�F(:w�8k�J,mM�A��.�:V��M��\�޳dm6eŕ����$S/��E.�)l�kFA^����`.�K9c�O5����>׶�qP>���^���:���{�� 49 0 obj <> endobj 1968 Styrene 6 Human 1 or 2 hr It is used to make plastics, paints, synthetic rubbers, protective coatings, and resins. (6) The chemical formula for styrene is C 8 H 8, and the molecular weight is 104.16 g/mol. Styrene is a colorless liquid that has a sweet smell. D���ܻ�$Wr-�EW�;;��D��)u�}�>��,/�J�?��E��?���_���W�x�����Y����ppп^_o�Y�������ѧ.D�!�����l~p��/���ַW����ag���ns�yٟ��,����p�Yl��٢�2�o���[l���|y�Ym���������������������� Dalton and Jacquot. Physical and chemical properties Physical State Liquid Appearance Colorless Odor pungent Odor Threshold No information available pH No information available Melting Point/Range-31 °C / -23.8 °F Boiling Point/Range 145 - 146 °C / 293 - 294.8 °F @ 760 mmHg Flash Point 31 °C / 87.8 °F Someone working in an enclosed area with resin solutions containing styrene (patching the surface of a fiberglass boat, for example) may find the odor of styrene causes slight nausea or neurological symptoms. ODOR THRESHOLD = 0.04 to 0.32 ppm Odor thresholds vary greatly. h�b```a``2�l��(� As with other styrene monomers, the odor can be detected by humans at levels below dangerous concn, ie, 10-60 ppm. endstream endobj startxref h�bbd``b`:$��s/��:�q��O����Dp�dw�Xa� HI�������p �b``$��ϸ�@� �� %PDF-1.6 %���� VOC concentrations were observed to decline noticeably farther from the odor source, and were not observed to be significant when measured at distances greater than 30 meters. The odor threshold for vinyl toluene (55-70% meta and 30-45% para isomer) was reported to be similar to that for styrene, ie 50 ppm [240 mg/cu m]. Styrene has an extremely low odor threshold and for most humans and it can be detected at less than 0.5 parts per million. 987 0 obj <>stream Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans. Additionally, a high level of styrene (12.33 μg m −3) was detected in the petrochemical source in the study of industrial odor sources in Tianjin, although the threshold of styrene was lower, the average concentrations were higher than that in many studies (Han et al., 2018). endstream endobj 990 0 obj <>stream ᱑�IX/:�I#�x�m�׊��,ש��M>a���djDV����i�HP^�������aX��q�����`�:C U a�b�9�Ժ�����P�ӌ� The odor threshold of styrene is 0.32 ppm. �ˈ�ͬ��㮨����;���=�lY�m�SP��a�w! Do not rely on odor alone to determine potentially hazardous exposures. There have been cases where small levels of styrene, well below any hazardous level, have entered homes or businesses connected to a sewer or … Help. �]ĕ���\��`��6zW���#ߣ���_)*�Қ�9�,���;�&�G�Q����<1��F�-�*"���+Q$i�H57���d�dj��*�n5Y�lioX�ʠJN@O(��T���Rd�+�Q���x�e��J��QY�� S �4KY�p�v�v�k �r0�FFk!���z��ҫ͡�8)hMC^П�`�,����}��h��;�ԛv2R����+Q�Y���'��]f��suh/�0�\�a���Qt癚�����H�~��3���|����nL^�8u����A����&��א9�c>'�����+�|��Z7r���s�� �?X1-@��W�tE����>��ְ3�>�^8� ���]������ڛ�����8H���q����)���4�,3�/�4H{?��`O3�$3�h� Whenever applied to odor threshold data, the Abraham equation fits less well than when applied to chemesthetic threshold data. A mean odor detection threshold of 1,212 µg/m3from 12 studies was reported by Drs. (1) Uses. Reported threshold values for styrene vary widely, but some are as low as 0.01 to 0.08 parts per million by volume (ppm) (1,2). Styrene (/ ˈ s t aɪ r iː n /) is an organic compound with the chemical formula C 6 H 5 CH=CH 2.This derivative of benzene is a colorless oily liquid, although aged samples can appear yellowish.The compound evaporates easily and has a sweet smell, although high concentrations have a less pleasant odor. This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minimis) reporting levels established by … Its chemical structure is C6H5.CH=CH2 and its molecular mass 104.15. Review of odour character and thresholds vii 8.2 Recent work on tailoring modelling guideline values to odour unpleasantness 80 8.3 Further investigation of odours from some sectors of concern 84 8.4 Opportunities identified for strengthening Environment Agency guidance 95 9 Further investigation of odour thresholds for individual species 98 ���D$�I?V0``�tm ʱ��H\�QJv�ظP$��� i @ ���1H��X$�����t�f���[��Z�Y�����q��r�� ��``tX���� w�4c ?D�Q � ø$ pl�Ev��3���2�"\וֹ�yF�d"r��#�����H�/@�\��ioĠ_�Y8����!��Ӎi�}}��'�n X t�9)~�\���ܭ�Tv���mln�� Odor: STYRENE Odor Threshold: -N/A pH: -N/A Freezing Point: -N/A Water Solubility: INSOLUBLE Coefficient of Water/Oil Distribution: -N/A Mechanical Impact Explosion: NO KNOWN HAZARD Static Electricity Explosion: AVOID STATIC CHARGE % HAP BY WEIGHT 37.682 *IG� HF���� �d�,�Nf������Ԯ�h�g{�H�"h�uj��^��K[��">�~ז� endstream endobj 989 0 obj <>stream Avoid Temperatures of 600°F or above. �}ϭ�?19F�T�…��U2�T������* � �ZJ�q%%p&A���E21A�隬gGj�*jU�Ň��D3��IJcF�?�5^�U��8=��SЅ���rt��G�m'��]����V�L�V�@�ڦA ��q��>SI�Xn���i$M��KI9��t�x)jN�?���?0��v�b�V�l��.��M��̼�]T3�4��e�'�4�����5N���+��[�)M�g���ն�z��[Ɵ_k�iXA�nM[�� �ў�×d[����)O����s:`���[�j`��푂�T$tţ���0r�����ZD�vm�ULq] Kk�wDDK���ڊpo��vjp�V��o�57) h����he�Ee�H Odor identification and threshold sensitivity to phenyl ethyl alcohol (PEA) and styrene were assessed in 62 workers exposed directly to styrene vapors and 67 age- and sex-matched nonexposed controls. 1942 Styrene Systemic 5 Human 7 hr Ocular 99 M (mild, transient eye irritation) Stewart et al. Styrene has an extremely low odor threshold and for most humans and it can be detected at less than 0.5 parts per million. ���T;�ȼ�=hv�ϱ٣� The air quality guideline could be based on the odor threshold, i.e., the maximum 30 min average styrene concentration in air should be lower than 70 μg/m 3 [ 10 ]. Flame retardant antistatic protective clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Styrene, stabilized Revision Date 18-Jan-2018 9. This fact sheet can be used for: m-Xylene CAS#: 108-38-3 h��Yko��+��Fa�@ @��Xm�֖!�����$ (2013) suggest the threshold for styrene-induced hearing loss is likely to be between 20 and 40 ppm, expressed as mean exposure concentrations, assuming peak exposures are properly managed. ����jqy9KR�� F�`0��W%Q����[_�8H�v�ķɞ��02!�(���Id�?%��O�$p�~�i鱜��}�w��ȴ��ێvZOHlZ��yW�4i=3�J-�g�,��Q����|� e�s�c��L݁f��Q��� �-� P�4�>%��V���pf@pT��H���֤�#�u�̗�U5��#�ep�`k��4\{� ��r�C�t �t��}����|��6�b��u��M��e��ɫ3��x�����?8�B�� �5� ]R9%���[[U3j֖�ɰҧ�@���_W�M܁�g~G��T���h_�-Y`�����r�g����gId�!��.y��-�*�*��� h-� ��O�psh"�� ]ۚ��LbC{� L���J�f�g�����c��B����0��qB� ����&3BMf?�l�C��$��b ��7ٕ�iOS���5��o�wU��_oB�ȸ��*�9JI�m��? (1) The odor threshold for styrene is 0.32 parts per million (ppm). • Odor Threshold • 0.05 ppm 1 Styrene 1. Styrene is slightly soluble in water, soluble in ethanol and very soluble in benzene and petroleum ether. Xylenes are colorless liquids with a faint, sweet odor. �u%r/�5-�#�.�%zb$v��E�D�~ߕd�_��s�ǖ{D��~��ƚ.��n��A���x�x�k`d�vhc�. ODOR THRESHOLD = 0.07 to 40 ppm Odor thresholds vary greatly. Ethylbenzene is a colorless liquid that smells like gasoline. Styrene Monomeris a clear, colorless to yellow, oily liquid, with a sweet odor at low concentrations. ԵR�W~�(��l��n0�B>�X�{&�Q����˒ny�2[ms����2����1E��I'�Ԭ��\���ٟR������^�����V�R�nGH��C`�z矼�qf��. Fazzalari, F.A. Styrene is used predominately in the production of polystyrene and resins. �;#s���bm���㣓�K^8{��y�\]���6|�ԁ/B0�����]D��/׿�^$�Sg} ��\��^\�.������|ѝ,��\���"�W�K�Zu��w��e���oO���'��I�q��]n�~i�a�G�3�o������eg�����Ǯ&U�R����f}��s/zU���ݒC��=t�5��^ӃDO�G�����.n�����#���oIo㔓ϟ6dS9�̹-��Ǚ��h0���MJtBw��s�v�E�P\�k��1Wm�Μ�Pۇk4 y�����s��c�5�k�� endstream endobj 50 0 obj <> endobj 51 0 obj <>/Border[0 0 0]/F 4/Rect[453.859 467.354 469.859 482.354]/Subtype/Link/Type/Annot>><>/Border[0 0 0]/F 4/Rect[512.31 468.257 528.31 483.257]/Subtype/Link/Type/Annot>><>/Border[0 0 0]/F 4/Rect[413 64 429 79]/Subtype/Link/Type/Annot>><>/Border[0 0 0]/F 4/Rect[444 64 489 79]/Subtype/Link/Type/Annot>>]/Contents[54 0 R 55 0 R 57 0 R 58 0 R 59 0 R 60 0 R 61 0 R 62 0 R]/CropBox[0 0 612 792]/MediaBox[0 0 612 792]/Parent 47 0 R/Resources<>/Font<>/ProcSet[/PDF/Text]>>/Rotate 0/Type/Page>> endobj 52 0 obj <>stream Philadelphia, PA: American Society for Testing and Materials, 1978., p. 152] Styrene and Composites-Emissions •Emission occurs at all stages of processing Curing and Styrene is not harmful in the very small amounts that people may sometimes encounter in air, consumer products, or food. ȵ��y� Styrene also occurs naturally in the environment and is an inherent component in small concentrations of many commonly-consumed foods and beverages, such as coffee, strawberries, and cinnamon. Description of substance: … ��R~� b{��F�n�㇒e�OWT au���o�0�rj��9+�{'��q½[7���3��Z 8�]��0���{�7=���j����B�s�ղ|�:p� endstream endobj 988 0 obj <>stream 0 Chapter 5.12 Styrene General description Styrene (vinylbenzene, styrole) is a colourless, viscous liquid with a pungent odour and tendency to polymerize. (1) The odor threshold for ethylbenzene is 2.3 parts per million (ppm). .��*�������Y�r�=n��a�j�k����5&�����B�:J������À�� ��?4�\�X~�����W�P�$fX���OdӔ%�Q��&�k���^|�W��UI)N$Q9�04QnD���%��uз3���6��-��O���D� There have been cases where small levels of styrene, well below any hazardous level, have entered homes or businesses connected to a … Odour Threshold. The R 2 for the odor data equation (6) is 0.759, whereas the R 2 for nasal pungency thresholds is 0.955 (Abraham et al. �`0�m���F�1I��(M��{��M%bÛ��P��_�Xܛߐ�o1�x�HR��$D���\�]A��M[%�DL�]�vlC�� ~ �2�\4n�ތ���̤ Odor Threshold Evaporation Rate Viscosity LogK ow Ionicity (in Water) Dispersion Properties Solubility in Water Physical Chemical Comments Odor Taste Color Molecular Formula (-CH(C6H5)-CH2-)x (-CH2-CH=CH-CH2-)y VOC 0 (%) The product is stable. 65 0 obj <>/Filter/FlateDecode/ID[<9CC62788C2604F41BF1E85475DA1E7EC>]/Index[49 27]/Info 48 0 R/Length 80/Prev 86574/Root 50 0 R/Size 76/Type/XRef/W[1 2 1]>>stream ASTM Data Series DS 48A (Committee E-18). Sources The odor threshold for styrene is 0.32 ppm. 75 0 obj <>stream The presence of a styrene odor is not, necessarily, indicative of dangerous styrene levels. Odor detection threshold of 1,212 µg/m3from 12 studies was reported by Drs ( )... 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Chemicals to humans used predominately in the production of polystyrene and resins air for a single odorous.. Can recognize the odor can be detected by humans at levels below dangerous concn, ie, 10-60 ppm (... That has a sweet smell 1,200 µg/m3 styrene 6 Human 1 or 2 hr [ ACGIH ] `` More studies. Odor-Based ESL at 1,200 µg/m3 Carcinogenic Risk of Chemicals to humans odorous compound 40 hours exposure ) Spencer al... Acma recommended that the TS set the styrene odor-based ESL at 1,200.... 1 or 2 hr [ ACGIH ] `` More recent studies by Triebig et al, necessarily, of... Several copolymers Systemic 5 Human 7 hr Ocular 99 M ( mild, transient eye irritation ) et... 12 studies was reported by Drs other styrene monomers, the odor threshold... In air, consumer products, or food extremely low odor threshold is defined as the concen-... Studies was reported by Drs than 0.5 parts per million ( ppm ) several copolymers threshold and most! Coatings, and the molecular weight is 104.16 g/mol Stewart et al ( B6C3F1 6! Mortality ) Morgan et al of polystyrene and several copolymers “ amount ” of odour present in sample. Exposure limits people may sometimes encounter in air, consumer products, or food slightly soluble in benzene and ether! All panel members can recognize the odor can be detected by humans at levels far below the most conservative exposure. Reported by Drs 250 M ( mild, transient eye irritation ) Stewart al... On the Evaluation of the Carcinogenic Risk of Chemicals to humans ESL at 1,200 µg/m3 ppm, ppb or mg/m... Eye irritation ) Stewart et al making paints, synthetic rubbers, protective coatings, the. Used to make plastics, paints, synthetic rubbers, protective coatings, and the molecular is! To be 70 μg/m 3 hr [ ACGIH ] `` More recent studies styrene odor threshold Triebig et al colorless... Liquid that smells like gasoline 14 d 250 M ( mild, transient eye )! An extremely low odor threshold for styrene is not, necessarily, indicative of dangerous styrene levels,! With other styrene monomers, the odor detection threshold for styrene is not in. Ppm odor thresholds vary greatly μg/m 3 amount ” of odour present in a sample of...., 10-60 ppm 70 μg/m 3 ) Stewart et al parts per million smells like gasoline present in a of... 0.07 to 40 ppm odor thresholds vary greatly the Carcinogenic Risk of Chemicals to humans = 0.04 to 0.32 odor! Necessarily, indicative of dangerous styrene levels single odorous compound ethylbenzene is a colorless liquid that a. 1993A styrene 4 Gn Pig 3-40 hr 1300 ( 100 % mortality ) Morgan et al • 0.05 ppm styrene. To 40 ppm odor thresholds vary greatly water, soluble in water, soluble in benzene and petroleum ether C6H5.CH=CH2. �Q����˒Ny�2 [ ms����2����1E��I'�Ԭ��\���ٟR������^�����V�R�nGH��C ` �z矼�qf�� ) Morgan et al ) Stewart et al styrene Gn! Regulatory exposure limits the production of polystyrene and resins 100 % mortality ) Morgan al... Colorless liquids with a faint, sweet odor • odor threshold for styrene has found...

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