식별자 및 물리적 특성
| CAS No. | 308075-06-1 |
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| 분자식 | C5H8 |
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| 평균 분자량 | 68.12 g/mol |
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| 단동위원소 질량 | 68.06260026 g/mol |
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| SMILES | C=CC(=C)C |
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| InChIKey | RRHGJUQNOFWUDK-UHFFFAOYSA-N |
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| PubChem CID | 6557 |
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| ChEMBL | CHEMBL1566132 |
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| ChEBI | CHEBI:35194 |
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| EC No. | 201-143-3 |
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| DTXSID | DTXSID2020761 |
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화학 및 물리적 성질
| XLogP | 2.5 |
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| 극성 표면적 | 0 |
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| 수소 결합 공여자 수 | 0 |
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| 수소 결합 수용자 수 | 0 |
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| 회전 가능 결합 수 | 1 |
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| 무거운 원자 수 | 5 |
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| 형식 전하 | 0 |
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| 복잡도 | 51.1 |
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| 물질 분류 | Carcinogens |
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| Polymers | Plastics & Rubber -> Other Monomers |
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| 화장품 | Cosmetics ingredient -> Fragrance |
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| pH | Natural rubber latex has a pH of 6.5-7.0 when it emerges from the tree. |
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| SpringerMaterials Properties | Coriolis coupling |
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| LogP(분배 계수) | log Kow = 2.422.30 |
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| 냄새 | Petroleum-lkeOdorless |
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| 맛 | Tasteless |
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| 밀도 | 0.681 at 68 °F (USCG, 1999) - Less dense than waterwill float0.679 g/cu cm at 20 °C0.906-0.916 g/cu cm @ 20 °CRelative density (water = 1): 0.70.679 @ 20°C0.681 g/cm3 |
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| Viscosity | The viscosity of natural rubber can be stabilized with the addition of small amounts of hydroxylamine hydrochloride or semicarbazide hydrochloride.0.3 mm²/s at 20-25 °C |
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| Color/Form | Colorless volatile liquidColorless, watery liquidNearly colorless and transparent in thin layers.Amorphous when unstretched, but has oriented crystalline structure on stretching /Cured (unvulcanized)/ |
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| 용해도 | less than 1 mg/mL at 70.7 °F (NTP, 1992)In water, 642 mg/L at 25 °CPractically insoluble in waterMiscible with ethanol, ethyl ether, acetone, benzeneSoluble in alcohol, ether, hydrocarbon solventsNatural rubber is soluble in most aliphatic, aromatic, and chlorinated solvents, but its high molecular weight makes it difficult to dissolve. |
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| 녹는점 | -145.95 °C |
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| 끓는 점 | 34.067 °C |
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안전 및 규제
| GHS 분류 | DangerH224: Extremely flammable liquid and vapor [Danger Flammable liquids]P203, P210, P233, P240, P241, P242, P243, P273, P280, P303+P361+P353, P318, P370+P378, P403+P235, P405, and P501 (click each P-code to see the statement)This chemical does not meet GHS hazard criteria for < 0.1% (1 of 2428) of reports.H224 (> 99.9%): Extremely flammable liquid and vapor [Danger Flammable liquids] |
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| 규제 정보 | Chemical: 1,3-Butadiene, 2-methyl-Chemical: Natural rubberHazard Traits - CarcinogenicityCommission Regulation (EC) No 1565/2000 (Repealed by Com. Implementing Reg. (EU) No 872/2012)1,3-Butadiene, 2-methyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of 1,3-Butadiene, 2-methyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 06-04-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/16096 |
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| 기타 안전 정보 | IMAP assessments - Natural rubber: Environment tier I assessmentIMAP assessments - 1,3-Butadiene, 2-methyl-: Environment tier I assessment |
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| 운송 라벨(DOT) | Flammable Liquid |
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| 화재 위험 | Special Hazards of Combustion Products: Toxic vapors are generated when heated· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.Extremely flammable. Vapour/air mixtures are explosive. |
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| 화재 가능성 | Extremely flammable.A fire hazard when exposed to heat or flame. |
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| 건강 유해성 | Vapor produces no effects other than slight irritation of the eyes and upper respiratory tract. Liquid may irritate eyeslike gasoline. (USCG, 1999)· May cause toxic effects if inhaled or absorbed through skin. |
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| 유해성 요약 | An irritant to the skin, eyes, and mucous membranesCauses CNS depression at high concentrations[HSDB] If left on clothes, may cause reddening of skin[CHRIS] Can affect the CNS, resulting in respiratory depression |
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