• 甲基叔丁基醚 Methyl tert-butyl ether (MTBE),Chongqing Guangyi Chemical Co., Ltd,甲基叔丁基醚 Methyl tert-butyl ether (MTBE)
  • 甲基叔丁基醚 Methyl tert-butyl ether (MTBE),Chongqing Guangyi Chemical Co., Ltd,甲基叔丁基醚 Methyl tert-butyl ether (MTBE)

甲基叔丁基醚 Methyl tert-butyl ether (MTBE)

No.CAS 1634-04-4
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  • 甲基叔丁基醚 Methyl tert-butyl ether (MTBE),Chongqing Guangyi Chemical Co., Ltd,甲基叔丁基醚 Methyl tert-butyl ether (MTBE)

Description

  1. Product Overview

甲基叔丁基醚(MTBE)为无色、透明、易挥发液体,具有醚样气味,是最主流的高辛烷值汽油添加剂与抗爆剂(含氧量约 18.2%)。微溶于水,与汽油、乙醇、乙醚等多数有机溶剂互溶。

Methyl tert-butyl ether (MTBE) is a colorless, clear, volatile liquid with an ether-like odor. It is the most widely used high-octane gasoline additive and antiknock agent (oxygen content ≈18.2%). Slightly soluble in water; miscible with gasoline, ethanol, ether and most organic solvents.

本品亦可通过高温裂解再生高纯异丁烯(橡胶、化工原料),并作为溶剂用于石蜡、香料、树脂、天然与合成橡胶、塑料、油脂及药物中间体;亦在色谱(如高效液相色谱)中作为溶剂使用。

It can be cracked to regenerate high-purity isobutylene (rubber/chemical feedstock) and is used as a solvent for paraffin, fragrances, resins, natural/synthetic rubbers, plastics and fats, and as a pharmaceutical intermediate; also a solvent in chromatography (e.g. HPLC).

注:世界卫生组织国际癌症研究机构(IARC)将其列为 3 类(对人类致癌性证据不足);部分国家/地区 SDS 将其标注为 H351(怀疑致癌)。

Note: IARC classifies MTBE as Group 3 (inadequate evidence of carcinogenicity in humans); some national/regional SDS label it H351 (suspected of causing cancer).

产品标识 / Product Identification

CAS 登记号 CAS No.

1634-04-4

分子式 Molecular formula

C5H12O

分子量 Molecular weight

88.15 g/mol

EINECS 号 EINECS No.

216-653-1

EC 索引号 EC Index No.

603-181-00-X

MDL 号 MDL No.

MFCD00008812

RTECS 号 RTECS

KN5250000

UN 编号 UN Number

2398(第3类 易燃液体,包装类别 II

Class 3 flammable liquid, Packing Group II)

HS 编码 HS Code

29091990

别名 Synonyms

甲基叔丁基醚;叔丁基甲基醚;2-甲氧基-2-甲基丙烷;MTBE

Methyl tert-butyl ether; tert-Butyl methyl ether; 2-Methoxy-2-methylpropane; MTBE

  1. Specifications (Industrial/Reagent Grade, Typical)

注:中国某石化企业标准 Q/MSH 04-2017 规定优等品 MTBE ≥98.0%、水 ≤0.30%、甲醇 ≤1.0%、叔丁醇 ≤0.8%、总硫 ≤10 mg/kg;以下为高纯工业级典型值。

Note: A Chinese enterprise standard (Q/MSH 04-2017) sets premium grade at MTBE ≥98.0%, water ≤0.30%, methanol ≤1.0%, TBA ≤0.8%, total S ≤10 mg/kg; values below are high-purity industrial typicals.

项目 Item

指标 Specification

测试方法 Test Method

甲基叔丁基醚含量 MTBE Assay (GC)

≥ 99.0 %

GC / SH/T 1550

外观 Appearance

无色透明液体,无机械杂质 / Colorless clear liquid, free of mechanical impurities

Visual

水分 Water (KF)

≤ 0.10 %

GB/T 6283 / ASTM E1064

密度 Density (20 °C)

0.740 – 0.742 g/cm³

GB/T 4472 / ASTM D4052

馏程 Distillation range (≥95% v/v)

54 – 56 °C

GB/T 7534 / ASTM D1078

折射率 Refractive index (n20/D)

1.368 – 1.370

ASTM D1218

甲醇 Methanol

≤ 0.10 %

GC

叔丁醇 tert-Butanol (TBA)

≤ 0.50 %

GC / SH/T 1550

甲基仲丁基醚 MSBE

≤ 1.00 %

GC / SH/T 1550

总硫 Total sulfur

≤ 10 mg/kg

SH/T 0253 / ASTM D5453

色度 Color (APHA)

≤ 10

GB/T 3143 / ASTM D1209

游离酸 Free acid (as CH3COOH)

≤ 0.005 %

Titration

蒸发残渣 Residue on evaporation

≤ 0.005 %

GB/T 6324.2

过氧化物 Peroxides (as H2O2)

≤ 0.005 %

GB/T 6324.3 / iodometry

    1. Physical & Chemical Properties

    分子式 Molecular formula

    C5H12O

    分子量 Molecular weight

    88.15 g/mol

    外观 Appearance

    无色透明易挥发液体

    Clear colorless volatile liquid

    气味 Odor

    醚样气味

    Ether-like odor

    熔点 Melting point

    -109 °C(文献 -108 ~ -110 °C

    lit. -108 ~ -110 °C)

    沸点 Boiling point

    55.2 °C

    密度 Density (20 °C)

    0.7405 g/cm³

    相对蒸气密度 Vapor density (air=1)

    ≈3.0

    蒸气压 Vapor pressure

    245 mmHg(约 32.7 kPa)@ 25 °C(ATSDR/NCBI);20 °C 约 210 – 280 hPa(各家略有差异

    20 °C ≈210–280 hPa, varies by source)

    闪点 Flash point (closed cup)

    -28 °C(闭杯 CC;文献 -10 ~ -28 °C,MTBE 为极低闪点极易燃

    lit. -10 ~ -28 °C; extremely low-FP, highly flammable)

    自燃温度 Auto-ignition temp.

    约 374 °C(705 °F);文献差异大,报道范围约 193 – 480 °C(以目的国最新资料为准

    literature 193–480 °C; use latest destination data)

    爆炸极限 Explosive limits (air, v/v)

    1.6 – 15.1 %(下限文献约 1.5 %

    lower lit. ≈1.5 %)

    折射率 Refractive index (n20/D)

    1.369(文献 1.368 – 1.370

    lit. 1.368 – 1.370)

    分配系数 log Pow (n-辛醇/水)

    约 1.0(文献 0.94 – 1.24

    lit. 0.94 – 1.24)

    溶解度 Solubility

    微溶于水(约 4.3 g/100 g @ 20 °C);与乙醇、乙醚及多数有机溶剂混溶

    Slightly soluble in water (ca. 4.3 g/100 g @ 20 °C); miscible with ethanol, ether and most organic solvents

    黏度 Viscosity (20 °C)

    约 0.36 mPa·s


    1. Applications

    汽油抗爆调和主料:显著提升汽油辛烷值(研究法 RON 约 118、马达法 MON 约 100),改善冷启动与燃烧效率,降低 CO 等有害排放,是无铅汽油升级的主流添加剂。

    Primary gasoline antiknock blendstock: markedly raises octane (RON ≈118, MON ≈100), improves cold start and combustion efficiency and lowers CO emissions; the mainstream additive for unleaded gasoline upgrading.

    异丁烯再生原料:高温裂解 MTBE 可高转化率再生高纯异丁烯,用于丁基橡胶、聚异丁烯、甲基丙烯酸甲酯等。

    Isobutylene feedstock: high-temperature cracking regenerates high-purity isobutylene for butyl rubber, polyisobutylene, MMA, etc.

    溶剂与中间体:用于石蜡、香料、树脂、橡胶、塑料、油脂的溶剂;医药/精细化工萃取与中间体;色谱(HPLC)溶剂。

    Solvent & intermediate: solvent for paraffin, fragrances, resins, rubbers, plastics, fats; pharma/fine-chemical extraction and intermediates; chromatography (HPLC) solvent.


    1. Storage & Handling

    储存于阴凉、通风、干燥库房,库温不宜超过 30 °C,避光、密封保存;远离火种、热源。醚类物质长期储存易生成过氧化物,须定期检查过氧化物含量。

    Store in a cool, dry, well-ventilated area; temperature ≤30 °C; keep from light and tightly closed; away from ignition sources and heat. Like other ethers, peroxides may form on prolonged storage — periodically check peroxide level.

    使用防爆型电气与工具,采取防静电措施(接地/跨接);禁止使用易产生火花的机械与工具,禁止使用压缩空气装卸。

    Use explosion-proof equipment; prevent static discharge (ground/bond); no spark-producing tools or machinery; no compressed-air transfer.

    与强氧化剂(如过氧化物、硝酸)、强酸分开存放,切忌混储;搬运轻装轻卸,防止包装破损。

    Segregate from strong oxidizers (e.g. peroxides, nitric acid), strong acids; handle gently to avoid package damage.

    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。

    Wear gloves, goggles and respirator; ensure good ventilation; avoid vapor inhalation and skin contact.


    1. Packaging

    200 L 钢桶(净含量依密度,约 150 kg)。

    200 L steel drum (≈150 kg net by density).

    IBC 吨桶(如 800 / 1000 kg)。

    IBC tote (e.g., 800 / 1000 kg).

    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).

    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).


    1. Shelf Life

    在原包装、密闭、阴凉干燥(建议 ≤30 °C,避光)条件下,建议保质期 12 个月;长期储存须定期检测过氧化物含量,超标不得使用。

    Recommended 12 months under original sealed packaging, cool and dry (≤30 °C, away from light); for long storage periodically test peroxide level and discard if above limit.


    1. Safety Note

    GHS 危险性分类(制造/试剂 SDS 通用核心):易燃液体 类别2(H225 高度易燃液体和蒸气);皮肤刺激 类别2(H315 引起皮肤刺激);严重眼刺激 类别2(H319 引起严重眼刺激);特异性靶器官毒性-单次接触 类别3(H335 呼吸道刺激;H336 可能引起昏睡或眩晕)。信号词:危险;象形图:GHS02 + GHS07。

    GHS classification (manufacturer/reagent SDS core): Flammable liquids Cat. 2 (H225); Skin irritation Cat. 2 (H315); Serious eye irritation Cat. 2 (H319); STOT-SE Cat. 3 (H335 respiratory irritation; H336 drowsiness/dizziness). Signal word: Danger; pictograms: GHS02 + GHS07.

    部分国家/地区 SDS 另含:急性毒性(经口)类别5(H303 吞咽可能有害)、吸入危害类别1(H304 吞咽及进入呼吸道可能致命)、怀疑致癌 类别2(H351)。请以装运目的国最新 SDS 为准。

    Some national/regional SDS additionally list: Acute tox. oral Cat. 5 (H303), Aspiration hazard Cat. 1 (H304), Suspected carcinogen Cat. 2 (H351). Follow the latest SDS of the destination country.

    本品极易燃,蒸气与空气可形成爆炸性混合物,比空气重,可沿地面扩散至引火源并回火;具醚样麻醉/刺激作用,高浓度抑制中枢神经系统。

    Highly flammable; vapour may form explosive mixtures with air, is heavier than air and can travel to ignition sources and flash back; ether-like narcotic/irritant effects, high concentrations depress the CNS.

    灭火用抗醇泡沫、干粉、二氧化碳或水雾;禁用直流水(本品溶于水且密度小于水,可浮于水面,直流水灭火无效)。燃烧可能释放一氧化碳(CO)等有毒气体。

    Use alcohol-resistant foam, dry powder, CO2 or water spray; avoid water jet (product is water-soluble and lighter than water, floats; water jet is ineffective). Combustion may release toxic gases such as CO.

    毒性 Toxicity:大鼠经口 LD50 ≈ 4000 mg/kg(低毒);大鼠吸入 LC50 ≈ 23576 ppm/4h。职业接触限值 OEL:TWA 40 ppm(部分标准)。

    Toxicity: rat oral LD50 ≈ 4000 mg/kg (low toxicity); rat inhalation LC50 ≈ 23576 ppm/4h. OEL: TWA 40 ppm (some standards).

    运输信息 Transport:UN 2398,第3类 易燃液体,包装类别 II;正确运输名称:METHYL TERT-BUTYL ETHER(IMDG / IATA / ADR 一致)。

    Transport: UN 2398, Class 3 flammable liquid, Packing Group II; proper shipping name: METHYL TERT-BUTYL ETHER (IMDG / IATA / ADR consistent).

    法规 Regulatory:属易燃液体(第3类,UN 2398 PG II)管理;德国水危害等级 WGK 3。是否列入《危险化学品目录》及具体监管条件,请以最新版目录与目的国法规为准。

    Regulatory: managed as flammable liquid (Class 3, UN 2398 PG II); WGK 3 (Germany water-hazard class). Whether listed in the Catalogue of Hazardous Chemicals and exact control conditions are subject to the latest catalog edition and destination-country regulations.


    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/试剂级典型参考值,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/reagent 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.