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甲基环己烷(MCH)是无色、透明、易挥发、易燃液体,具有类似汽油/淡淡的苯样气味,是环己烷母环上连接一个甲基的饱和脂环烃(单取代环己烷)。几乎不溶于水,与丙酮、苯、乙醚、四氯化碳、乙醇等多数有机溶剂混溶;比重水轻,会浮于水面。 |
Methylcyclohexane (MCH) is a colorless, clear, volatile, flammable liquid with a gasoline-like / faint benzene-like odor. It is a saturated cycloalkane (monosubstituted cyclohexane, one methyl group on the ring). Practically insoluble in water; miscible with acetone, benzene, ether, carbon tetrachloride, ethanol and most organic solvents; lighter than water. |
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分子存在「椅式」(甲基取赤道位最稳定) 与「船式」构象快速互变。主要用途:工业与科研低极性环保溶剂(涂料、油墨、清漆、橡胶/树脂稀释、电子清洗);色谱分析标准物质与校正温度计标准;有机合成(环己醇/环己酮中间体、甲基环己基醚);亦作汽油辛烷值改进组分与 PF-1 导弹启动液成分。 |
The molecule interconverts rapidly between 'chair' (methyl equatorial, most stable) and 'boat' conformers. Main uses: low-polarity eco-friendly solvent (coatings, inks, varnish, rubber/resin thinner, electronics cleaning); chromatography standard and thermometer-calibration reference; organic synthesis (cyclohexanol/cyclohexanone intermediates, methylcyclohexyl ether); also gasoline octane-blending component and PF-1 missile primer fluid. |
产品标识 / Product Identification
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CAS 登记号 CAS No. |
108-87-2 |
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分子式 Molecular formula |
C7H14(亦写作 C6H11CH3) |
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分子量 Molecular weight |
98.19 g/mol |
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EINECS 号 EINECS No. |
203-624-3 |
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MDL 号 MDL No. |
MFCD00001497 |
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RTECS 号 RTECS |
GV6125000 |
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Beilstein 号 Beilstein |
505972 |
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PubChem CID |
7962(经 PubChem 按 CAS 108-87-2 核验,非 7356 verified via PubChem by CAS 108-87-2; NOT 7356) |
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UN 编号 UN Number |
2296(第3类 易燃液体,包装类别 II Class 3 flammable liquid, Packing Group II) |
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HS 编码 HS Code |
29021900(中国 10 位 2902199090 China 10-digit 2902199090;属品目 2902 环烃下「其他环烷烃」,非 29021100 环己烷,亦非 291020 环氧化物) |
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别名 Synonyms |
甲基环己烷;六氢化甲苯;六氢甲苯;环己基甲烷;Methylcyclohexane; Hexahydrotoluene; Cyclohexylmethane; Heptanaphthene; MCH |
注:试剂/电子级典型纯度更高(如 ≥99.5% ~ ≥99.9%,水分 ≤50 ppm),具体以 COA 为准。以下为工业级典型值。
Note: reagent/electronic grades have higher typical purity (e.g., >=99.5%~>=99.9%, water <=50 ppm); per-COA applies. Industrial typicals below.
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项目 Item |
指标 Specification |
测试方法 Test Method |
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甲基环己烷含量 Assay (GC) |
≥ 99.0 %(试剂级 ≥ 99.5 % / reagent ≥ 99.5 %) |
GB/T 9722 / ASTM D4492 |
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外观 Appearance |
无色透明液体,无机械杂质 / Colorless clear liquid, free of mechanical impurities |
Visual |
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水分 Water (KF) |
≤ 0.05 %(试剂级 ≤ 0.02 % / reagent ≤ 0.02 %) |
GB/T 6283 / ASTM E1064 |
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密度 Density (20 °C) |
0.769 – 0.770 g/cm³ |
GB/T 4472 / ASTM D4052 |
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馏程 Distillation range (≥95% v/v) |
100.5 – 101.5 °C |
GB/T 7534 / ASTM D1078 |
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折射率 Refractive index (n20/D) |
1.421 – 1.423 |
GB/T 614 / ASTM D1218 |
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色度 Color (APHA) |
≤ 20 |
GB/T 3143 / ASTM D1209 |
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酸度(以 CH3COOH 计) Acidity (as CH3COOH) |
≤ 0.01 % |
Titration / GB/T 9736 |
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蒸发残渣 Residue on evaporation |
≤ 0.002 % |
GB/T 6324.2 |
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苯含量 Benzene |
≤ 0.10 % |
GC / ASTM D4492 |
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分子式 Molecular formula |
C7H14(C6H11CH3) |
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分子量 Molecular weight |
98.19 g/mol |
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外观 Appearance |
无色透明液体,类似汽油/淡淡苯样的气味 Clear colorless liquid, gasoline-like / faint benzene-like odor |
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熔点 Melting point |
-126.6 °C(文献 -126 °C lit. -126 °C) |
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沸点 Boiling point |
101 °C(文献 100.9 – 101 °C lit. 100.9–101 °C) |
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密度 Density (20 °C) |
0.769 g/cm³(Merck 规格 0.769 – 0.770);25 °C 0.77 g/mL |
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相对蒸气密度 Vapor density (air=1) |
3.4(文献一致 consistent) |
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蒸气压 Vapor pressure |
约 4.9 kPa(≈37 mmHg)@ 20 °C(Merck 记 61.8 hPa @ 25 °C ca. 4.9 kPa (≈37 mmHg) @ 20 °C; 61.8 hPa @ 25 °C) |
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闪点 Flash point (closed cup) |
-4 °C(闭杯 CC;≈ 25 °F -4.0 °C CC; ≈ 24.8 °F)→ GHS 易燃液体 类别2 / H225 Cat.2 |
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自燃温度 Auto-ignition temp. |
约 260 °C(Merck DE;Sigma US USCG 记 545 °F ≈ 285 °C / ca. 260 °C (Merck DE); 545 °F ≈ 285 °C per Sigma US / USCG) |
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爆炸极限 Explosive limits (air, v/v) |
约 1.1 – 6.7 %(NIOSH LEL 1.2% UEL 6.7%;文献 1.1 – 6.7 %) |
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折射率 Refractive index (n20/D) |
1.422(文献 1.421 – 1.423) |
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分配系数 log Pow (n-辛醇/水) |
约 3.6(XLogP3 3.61;文献亦记 3.88) |
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黏度 Viscosity (20 °C) |
约 0.73 mPa·s(文献值 literature value) |
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溶解度 Solubility |
几乎不溶于水(约 0.014 – 0.1 g/L,Merck 记 0.014 g/L);与丙酮、苯、乙醚、四氯化碳、乙醇等多数有机溶剂混溶 Practically insoluble in water (ca. 0.014–0.1 g/L); miscible with acetone, benzene, ether, carbon tetrachloride, ethanol and most organic solvents |
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临界温度/压力 Critical temp./press. |
约 299.1 °C 3.48 MPa(≈572 K / 34.8 bar) |
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溶剂:涂料、油墨、清漆溶剂;橡胶、树脂稀释剂;电子元件清洗剂。低毒环保,可替代苯类溶剂,溶解力强。 |
Solvent: coatings, inks, varnish solvent; rubber/resin thinner; electronics cleaning agent. Low-toxicity, eco-friendly; replaces benzene-class solvents with strong solvency. |
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分析与校准:色谱分析标准物质;校正温度计的标准;也作光刻胶/有机合成反应溶剂。 |
Analytical & calibration: chromatography standard; thermometer-calibration reference; photoresist / organic-synthesis reaction solvent. |
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石化与特种燃料:汽油辛烷值改进组分;重整装置原料转化为甲苯;PF-1 导弹启动液成分。 |
Petrochemical & specialty fuel: gasoline octane-blending component; reformate feedstock converted to toluene; PF-1 missile primer fluid constituent. |
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有机合成与萃取:合成环己醇/环己酮中间体、甲基环己基醚;油脂萃取剂;锂电池电解液添加剂(低挥发性、热稳定性佳)。 |
Organic synthesis & extraction: cyclohexanol/cyclohexanone intermediates, methylcyclohexyl ether; oil/fat extraction solvent; Li-ion electrolyte additive (low volatility, good thermal stability). |
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储存于阴凉、通风、干燥库房,库温不宜超过 30 °C,密封、远离火种与热源;建议 5 – 30 °C,store below +30 °C。 |
Store in a cool, dry, well-ventilated area; temperature ≤30 °C (recommended 5–30 °C); keep sealed, away from ignition sources and heat (store below +30 °C). |
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使用防爆型电气与工具,采取防静电措施(接地/跨接);禁止易产生火花的机械与工具,禁止用压缩空气装卸(闪点 -4 °C,极易燃)。 |
Use explosion-proof equipment; prevent static discharge (ground/bond); no spark-producing tools; no compressed-air transfer (FP -4 °C, highly flammable). |
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与氧化剂(强酸、强碱、过氧化物等)分开存放,切忌混储;容器须防静电、防火花。 |
Segregate from oxidizers (strong acids/bases, peroxides); no mixed storage; containers must be anti-static and spark-proof. |
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操作人员佩戴防护手套、护目镜与防毒面具,加强通风,避免吸入蒸气或皮肤接触;蒸气比空气重(≈3.4),可沿地面扩散至引火源并回火。 |
Wear gloves, goggles and respirator; ensure good ventilation; avoid vapor inhalation and skin contact; vapour is heavier than air (≈3.4) and can travel to ignition sources (flash-back). |
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180 kg 塑料桶 / 钢桶(净重约 155 – 160 kg)。 |
180 kg plastic drum / steel drum (≈155–160 kg net). |
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IBC 吨桶(如 800 / 1000 kg)。 |
IBC tote (e.g., 800 / 1000 kg). |
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散装:ISO TANK 罐箱或槽车(可按客户需求提供)。 |
Bulk: ISO TANK or road tanker (available on request). |
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注意:容器须符合 UN 危险货物包装要求(第3类易燃液体,PG II)。 |
Note: containers must meet UN hazardous-goods packaging requirements (Class 3, PG II). |
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在原包装、密闭、阴凉干燥(建议 ≤30 °C,避光、防潮)条件下,建议保质期 12 个月;长期储存须定期检查,开封后某些溶剂易生成过氧化物,使用前应检测过氧化物含量。 |
Recommended 12 months under original sealed packaging, cool and dry (≤30 °C, away from light and moisture); for long storage inspect periodically; after opening, peroxides may form in many solvents—test for peroxides before use. |
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GHS 危险性分类(Sigma-Aldrich / Merck SDS 共识):易燃液体 类别2(H225 高度易燃液体和蒸气);吸入危害 类别1(H304 吞咽或进入呼吸道可能致命);皮肤刺激 类别2(H315 引起皮肤刺激);特异性靶器官毒性-单次接触 类别3(H336 可能引起嗜睡或眩晕);严重危害水生环境-急性 类别1 + 长期 类别1(H410 对水生生物毒性极大并具有长期持续影响;急性 H400)。信号词:危险(Danger);象形图:GHS02 + GHS07 + GHS08 + GHS09。注:部分中文 SDS 另列 H302(吞咽有害)、H320(眼刺激)。 |
GHS classification (Sigma-Aldrich / Merck SDS consensus): Flammable liquids Cat. 2 (H225 highly flammable liquid and vapour); Aspiration hazard Cat. 1 (H304 may be fatal if swallowed and enters airways); Skin irritation Cat. 2 (H315); STOT-SE Cat. 3 (H336 may cause drowsiness or dizziness); Aquatic Acute 1 + Chronic 1 (H410 very toxic to aquatic life with long lasting effects; acute H400). Signal word: Danger; pictograms: GHS02 + GHS07 + GHS08 + GHS09. Note: some Chinese SDS additionally list H302 (harmful if swallowed) and H320 (eye irritation). |
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本品极易燃(闪点 -4 °C),蒸气比空气重(≈3.4),可沿地面扩散至引火源并回火;高浓度蒸气有麻醉/刺激作用,刺激眼与呼吸道;吞咽并进入呼吸道有致命危险(H304)。 |
Highly flammable (FP -4 °C); vapour heavier than air (≈3.4) and can travel to ignition sources (flash-back); high-concentration vapour is narcotic/irritating; H304 aspiration hazard is fatal if swallowed and enters airways. |
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灭火用抗醇泡沫、干粉、二氧化碳或砂土;燃烧可能释放一氧化碳(CO)等有毒气体;禁止用直流水(易飞溅扩散)。 |
Use alcohol-resistant foam, dry powder, CO2 or sand; combustion may release toxic gases such as CO; do not use straight water streams. |
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毒性 Toxicity:低毒。LD50(小鼠经口)2250 mg/kg(RTECS);大鼠经口约 2250 mg/kg;兔经皮 LD50 > 86000 mg/kg(Merck)。职业接触限值:NIOSH REL TWA 400 ppm(≈1600 mg/m³),OSHA PEL TWA 500 ppm(≈2000 mg/m³);IDLH 1200 ppm。对水体危害等级 WGK 2(德国)。 |
Toxicity: low toxicity. LD50 (mouse oral) 2250 mg/kg (RTECS); rat oral ca. 2250 mg/kg; rabbit dermal LD50 > 86000 mg/kg (Merck). OELs: NIOSH REL TWA 400 ppm (≈1600 mg/m³), OSHA PEL TWA 500 ppm (≈2000 mg/m³); IDLH 1200 ppm. Water hazard WGK 2 (Germany). |
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运输信息 Transport:UN 2296,第3类 易燃液体,包装类别 II;正确运输名称 METHYLCYCLOHEXANE(ADR/RID、IMDG、IATA-DGR 一致;ERG 2024 指南 128 易燃液体/有毒蒸气)。 |
Transport: UN 2296, Class 3 flammable liquid, Packing Group II; proper shipping name METHYLCYCLOHEXANE (ADR/RID, IMDG, IATA-DGR consistent; ERG 2024 Guide 128 flammable liquid / toxic vapour). |
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法规 Regulatory:属易燃液体(第3类,UN 2296 PG II)管理;GB 13690 划为第3.2类中闪点易燃液体;EINECS 203-624-3;REACH 已注册;TSCA 已列。 |
Regulatory: managed as flammable liquid (Class 3, UN 2296 PG II); GB 13690 classifies as 3.2 medium-flash flammable liquid; EINECS 203-624-3; REACH registered; TSCA listed. |
免责声明 / Disclaimer
本技术数据表(TDS)所载信息基于公开标准、行业惯例及供应商提供的数据编制,仅供用户参考,不构成任何明示或暗示的担保。
The information in this Technical Data Sheet (TDS) is compiled from published standards, general industry practice, and data supplied by the manufacturer/supplier. It is provided for the user's reference only and constitutes no express or implied warranty of any kind.
表中规格为工业级典型参考值,具体指标以每批次《分析合格证(COA)》为准;用户应自行确认产品对特定用途的适用性与合规性,并遵守所在地法律法规。
The specifications listed are typical reference values for industrial grade; actual values are subject to the Certificate of Analysis (COA) of each batch. Users shall independently verify the product's suitability and regulatory compliance for the intended use and shall comply with applicable laws and regulations.
在法律允许的最大范围内,重庆广益化工有限公司不对因使用本数据表或本产品而产生的任何损失、损害或后果承担责任。
To the maximum extent permitted by law, Chongqing Guangyi Chemical Co., Ltd. shall not be liable for any loss, damage, or consequence arising from the use of this data sheet or this product.