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Isobutane (33)CAS RN:75-28-5
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National WeldersTelephone:800-943-0333
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Spectra Gases, Inc.Telephone:908-252-9300
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Psg Co., Ltd.Telephone:82 - 51 - 2668205
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Marathon Ashland Petroleum LLCTelephone:
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Phillips Chemical Co.Telephone:1-281-2931000
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MidPoint Chemicals CompanyTelephone:630 758 0400
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Tauber Oil CompanyTelephone:+1 (713) 869-8700
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Chevron Phillips Chemicals, S.A. de C.V.Telephone:(+55) 5251-5561
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Vadilal Chemicals Ltd.Telephone:(079)26466310
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Valero CorporateTelephone:(210)345-2000 ;(800)531-7911