均苯四甲酸四甲酯 | 635-10-9

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 中文名称: 均苯四甲酸四甲酯
• 中文别名: 1,2,4,5-苯四甲酸四甲酯；四甲基均苯四甲酸酯
• 英文名称: pyromellitic acid tetramethyl ester
• 英文别名: tetramethyl 1,2,4,5-benzenetetracarboxylate；Tetramethyl pyromellitate；tetramethyl benzene-1,2,4,5-tetracarboxylate
• CAS: 635-10-9
• 化学式: C₁₄H₁₄O₈
• mdl: MFCD00014903
• 分子量: 310.26
• InChiKey: QVEIFJBUBJUUMB-UHFFFAOYSA-N

物化性质

• 熔点：
  143-144°C
• 沸点：
  410.43°C (rough estimate)
• 密度：
  1.4258 (rough estimate)
• 保留指数：
  2095;2077.7;2069.1
• 稳定性/保质期：

  远离氧化物。

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  22
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.285
• 拓扑面积：
  105
• 氢给体数：
  0
• 氢受体数：
  8

安全信息

• 危险品标志：
  Xi
• 安全说明：
  S26,S37/39
• 危险类别码：
  R36/37/38
• WGK Germany：
  3
• RTECS号：
  UT7140900
• 海关编码：
  29333999
• 储存条件：
  存放在密封容器内，并放置在阴凉、干燥处。请确保储存地点远离氧化剂。

SDS

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SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifiers
Product name : Tetramethyl 1,2,4,5-Benzenetetracarboxylate
REACH No. : A registration number is not available for this substance as the substance
or its uses are exempted from registration, the annual tonnage does not
require a registration or the registration is envisaged for a later
registration deadline.
Relevant identified uses of the substance or mixture and uses advised against
Identified uses : Laboratory chemicals, Manufacture of substances

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SECTION 2: Hazards identification
Classification of the substance or mixture
Not a hazardous substance or mixture according to Regulation (EC) No. 1272/2008.
This substance is not classified as dangerous according to Directive 67/548/EEC.
Label elements
The product does not need to be labelled in accordance with EC directives or respective national laws.
Other hazards
This substance/mixture contains no components considered to be either persistent, bioaccumulative and
toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.

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SECTION 3: Composition/information on ingredients
Substances
Molecular weight : 310,26 g/mol
No components need to be disclosed according to the applicable regulations.

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SECTION 4: First aid measures
Description of first aid measures
If inhaled
If breathed in, move person into fresh air. If not breathing, give artificial respiration.
In case of skin contact
Wash off with soap and plenty of water.
In case of eye contact
Flush eyes with water as a precaution.
If swallowed
Never give anything by mouth to an unconscious person. Rinse mouth with water.
Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in
section 11
Indication of any immediate medical attention and special treatment needed
No data available

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SECTION 5: Firefighting measures
Extinguishing media
Suitable extinguishing media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Special hazards arising from the substance or mixture
Nature of decomposition products not known.
Advice for firefighters
Wear self-contained breathing apparatus for firefighting if necessary.
Further information
No data available

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SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
Avoid dust formation. Avoid breathing vapours, mist or gas.
For personal protection see section 8.
Environmental precautions
No special environmental precautions required.
Methods and materials for containment and cleaning up
Sweep up and shovel. Keep in suitable, closed containers for disposal.
Reference to other sections
For disposal see section 13.

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SECTION 7: Handling and storage
Precautions for safe handling
Provide appropriate exhaust ventilation at places where dust is formed.
For precautions see section 2.2.
Conditions for safe storage, including any incompatibilities
Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
Storage class (TRGS 510): Non Combustible Solids
Specific end use(s)
Apart from the uses mentioned in section 1.2 no other specific uses are stipulated

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SECTION 8: Exposure controls/personal protection
Control parameters
Components with workplace control parameters
Exposure controls
Appropriate engineering controls
General industrial hygiene practice.
Personal protective equipment
Eye/face protection
Use equipment for eye protection tested and approved under appropriate government standards
such as NIOSH (US) or EN 166(EU).
Skin protection
Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique
(without touching glove's outer surface) to avoid skin contact with this product. Dispose of
contaminated gloves after use in accordance with applicable laws and good laboratory practices.
Wash and dry hands.
The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and
the standard EN 374 derived from it.
Body Protection
Choose body protection in relation to its type, to the concentration and amount of dangerous
substances, and to the specific work-place., The type of protective equipment must be selected
according to the concentration and amount of the dangerous substance at the specific workplace.
Respiratory protection
Respiratory protection is not required. Where protection from nuisance levels of dusts are desired,
use type N95 (US) or type P1 (EN 143) dust masks. Use respirators and components tested and
approved under appropriate government standards such as NIOSH (US) or CEN (EU).
Control of environmental exposure
No special environmental precautions required.

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SECTION 9: Physical and chemical properties
Information on basic physical and chemical properties
a) Appearance Form: solid
b) Odour No data available
c) Odour Threshold No data available
d) pH No data available
e) Melting point/freezing No data available
point
f) Initial boiling point and No data available
boiling range
g) Flash point No data available
h) Evaporation rate No data available
i) Flammability (solid, gas) No data available
j) Upper/lower No data available
flammability or
explosive limits
k) Vapour pressure No data available
l) Vapour density No data available
m) Relative density No data available
n) Water solubility No data available
o) Partition coefficient: n- No data available
octanol/water
p) Auto-ignition No data available
temperature
q) Decomposition No data available
temperature
r) Viscosity No data available
s) Explosive properties No data available
t) Oxidizing properties No data available
Other safety information
No data available

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SECTION 10: Stability and reactivity
Reactivity
No data available
Chemical stability
Stable under recommended storage conditions.
Possibility of hazardous reactions
No data available
Conditions to avoid
No data available
Incompatible materials
Strong oxidizing agents
Hazardous decomposition products
In the event of fire: see section 5

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SECTION 11: Toxicological information
Information on toxicological effects
Acute toxicity
No data available
Skin corrosion/irritation
No data available
Serious eye damage/eye irritation
No data available
Respiratory or skin sensitisation
No data available
Germ cell mutagenicity
No data available
Carcinogenicity
IARC: No component of this product present at levels greater than or equal to 0.1% is identified as
probable, possible or confirmed human carcinogen by IARC.
Reproductive toxicity
No data available
Specific target organ toxicity - single exposure
No data available
Specific target organ toxicity - repeated exposure
No data available
Aspiration hazard
No data available
Additional Information
RTECS: Not available
To the best of our knowledge, the chemical, physical, and toxicological properties have not been
thoroughly investigated.

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SECTION 12: Ecological information
Toxicity
No data available
Persistence and degradability
No data available
Bioaccumulative potential
No data available
Mobility in soil
No data available
Results of PBT and vPvB assessment
This substance/mixture contains no components considered to be either persistent, bioaccumulative and
toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.
Other adverse effects
No data available

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SECTION 13: Disposal considerations
Waste treatment methods
Product
Offer surplus and non-recyclable solutions to a licensed disposal company.
Contaminated packaging
Dispose of as unused product.

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SECTION 14: Transport information
UN number
ADR/RID: - IMDG: - IATA: -
UN proper shipping name
ADR/RID: Not dangerous goods
IMDG: Not dangerous goods
IATA: Not dangerous goods
Transport hazard class(es)
ADR/RID: - IMDG: - IATA: -
Packaging group
ADR/RID: - IMDG: - IATA: -
Environmental hazards
ADR/RID: no IMDG Marine pollutant: no IATA: no
Special precautions for user
No data available

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SECTION 15: Regulatory information
This safety datasheet complies with the requirements of Regulation (EC) No. 1907/2006.
Safety, health and environmental regulations/legislation specific for the substance or mixture
No data available
Chemical Safety Assessment
For this product a chemical safety assessment was not carried out

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SECTION 16: Other information
Further information
Copyright 2014 Co. LLC. License granted to make unlimited paper copies for internal use
only.
The above information is believed to be correct but does not purport to be all inclusive and shall be
used only as a guide. The information in this document is based on the present state of our knowledge
and is applicable to the product with regard to appropriate safety precautions. It does not represent any
guarantee of the properties of the product. Corporation and its Affiliates shall not be held
liable for any damage resulting from handling or from contact with the above product. See
and/or the reverse side of invoice or packing slip for additional terms and conditions of sale.

反应信息

• 作为反应物：
  描述：

  均苯四甲酸四甲酯 在 Ru-carbon 硫酸 、 氢气 作用下， 以 水 为溶剂， 149.85 ℃ 、5.0 MPa 条件下， 生成 1,2,4,5-cyclohexanetetracarboxylic acid
  参考文献：
  名称：

  cis,cis,cis-1,2,4,5-Cyclohexanetetracarboxylic acid and its dianhydride

  摘要：

  cis,cis,cis-1,2,4,5-Cyclohexanetetracarboxylic acid,C10H12O8, (I), contains a mirror plane and the cyclohexane ring exhibits a chair conformation. Two crystallographically independent hydrogen bonds form R-2(2)(14), R-2(2)(16) and R-4(4)(16) ring motifs, and propagation of these two hydrogen bonds along the c and b axes generates C-2(2)(16) and C-2(2)(7) chains. cis, cis, cis-1,2: 4,5-Cyclohexanetetracarboxylic dianhydride, C10H8O6, (II), was prepared by the reaction of (I) with acetic anhydride. The cyclohexane ring of (II) exhibits a boat conformation and the dihedral angle between the two anhydro rings is 117.5 (1)degrees.

  DOI：

  10.1107/s0108270103013362
• 作为产物：
  描述：

  均苯四甲酸 在 重氮甲烷 、 乙醚 作用下， 生成 均苯四甲酸四甲酯
  参考文献：
  名称：

  The Structure of Cadinene

  摘要：

  DOI：

  10.1021/ja01254a050
• 作为试剂：
  描述：

  四丁基锡 、 马来酸二甲酯 在 均苯四甲酸四甲酯 作用下， 以 乙腈 为溶剂， 反应 15.0h， 以76%的产率得到dimethyl 2-butylsuccinate
  参考文献：
  名称：

  Fagnoni; Mella; Albini, Journal of the American Chemical Society, 1995, vol. 117, # 30, p. 7877 - 7880

  摘要：

  DOI：

文献信息

• STABILIZER COMPOUND, LIQUID CRYSTAL COMPOSITION, AND DISPLAY ELEMENT
  申请人：DIC CORPORATION

  公开号：US20180230094A1

  公开（公告）日：2018-08-16

  The present invention provides a compound represented by General Formula (I). The compound according to the present invention prevents the liquid crystal composition from being deteriorated due to light, has high compatibility with the liquid crystal composition, and does not impair the storage stability of the liquid crystal composition, thus the compound is useful as a constituent member of a liquid crystal composition. Since the liquid crystal composition and the liquid crystal display element containing the compound of the present invention exhibit UV resistance and have a high VHR, it is possible to obtain a liquid crystal display element with excellent display quality in which display defects such as burn-in and display unevenness do not occur or are suppressed.

  本发明提供了一种由通式（I）表示的化合物。根据本发明的化合物可以防止液晶组合物因光照而恶化，与液晶组合物具有高兼容性，并不会损害液晶组合物的储存稳定性，因此该化合物作为液晶组合物的组成部分是有用的。由于含有本发明化合物的液晶组合物和液晶显示元件表现出UV抵抗性，并具有高VHR，因此可以获得具有优异显示质量的液晶显示元件，其中不会发生或被抑制烧屏和显示不均匀等显示缺陷。
• Aromatic CC Bonds as Dipolarophiles: Facile Reactions of Uncomplexed Electron-Deficient Benzene Derivatives and Other Aromatic Rings with a Non-Stabilized Azomethine Ylide
  作者：Sunyoung Lee、Sonia Diab、Pierre Queval、Muriel Sebban、Isabelle Chataigner、Serge R. Piettre

  DOI：10.1002/chem.201201238

  日期：2013.5.27

  Non‐stabilized azomethine ylide 4 a reacts smoothly at room temperature with a variety of uncomplexed aromatic heterocycles and carbocycles on the condition that the ring contains at least one or two electron‐withdrawing substituents, respectively. Aromatic substrates, including pyridine and benzene derivatives, participate as 2 π components in [3+2] cycloaddition reactions and interact with one, two

  非稳定的甲亚胺叶立德4 a在环上分别含有至少一个或两个吸电子取代基的条件下，在室温下可与各种未络合的芳族杂环和碳环平滑反应。芳香族底物（包括吡啶和苯衍生物）作为2π组分参与[3 + 2]环加成反应，并根据其结构和取代方式与一，二或三当量的叶立德发生相互作用。因此，该方法提供了高度有用的多环结构，其以有用的产率包含一个至三个之间的吡咯烷基环。这些结果表明，环加成反应的位点选择性强烈取决于取代基的性质和位置。在大多数情况下，第二个1 3-偶极反应发生在与第一个吡咯烷基环相对的面上。DFT对模型化合物的计算表明，协同作用的机制具有较低的活化势垒。
• Magnesium amide bases and amido-Grignards. 1. Ortho magnesiation
  作者：Philip E. Eaton、Chih Hung Lee、Yusheng Xiong

  DOI：10.1021/ja00202a054

  日期：1989.9

  Magnesiation de divers esters et carboxamides par (TMP) 2 Mg (TMPH=tetramethyl-«2,2,6,6» piperidine) suivie d'une carboxylation par CO 2 et d'une esterification

  Magnesiation de diversesters et carboxamides par (TMP) 2 Mg (TMPH=四甲基-«2,2,6,6»哌啶) suvie d'une 羧化 par CO 2 et d'une酯化
• Functionalized and Degradable Polyphthalaldehyde Derivatives
  作者：J. Patrick Lutz、Oleg Davydovich、Matthew D. Hannigan、Jeffrey S. Moore、Paul M. Zimmerman、Anne J. McNeil

  DOI：10.1021/jacs.9b07508

  日期：2019.9.18

  polyphthalaldehyde derivatives has not been systematically studied. Herein, we investigate the cationic polymerization of seven o-phthalaldehyde derivatives and demonstrate that judicious choice of substituent results in materials with a wide range of ceiling temperatures (<-60 to 106 °C) and decomposition temperatures (109-196 °C). We anticipate that these new polymers and their derivatives will enable researchers

  解聚回单体的聚合物可以反复进行化学回收，从而减少对环境的影响。聚苯二醛是一种亚稳态聚合物，由于其较低的上限温度，可以快速定量解聚。然而，取代对聚苯二醛衍生物理化性质的影响尚未得到系统研究。在此，我们研究了七种邻苯二甲醛衍生物的阳离子聚合，并证明明智地选择取代基会导致材料具有广泛的上限温度（<-60 至 106 °C）和分解温度（109-196 °C）。我们预计这些新聚合物及其衍生物将使研究人员能够获得具有可调热、物理和化学特性的可降解材料。
• Esters of Pyromellitic Acid. Part I. Esters of Achiral Alcohols: Regioselective Synthesis of Partial and Mixed Pyromellitate Esters, Mechanism of Transesterification in the Quantitative Esterification of the Pyromellitate System Using Orthoformate Esters, and a Facile Synthesis of the Ortho Pyromellitate Diester Substitution Pattern
  作者：John B. Paine

  DOI：10.1021/jo800543w

  日期：2008.7.1

  diesters, by further esterification followed by hydrogenolysis. Refluxing orthoformate triesters were found to effect quantitative esterification of the pyromellitate system under autocatalytic conditions; minor ester exchange with pre-existing esters (0−5% of total product) was ascribed to reversible anhydride formation. For general esterification with alcohols, partial ester acid chlorides were obtained

  温和的条件和可逆酸酐的形成允许在酯化过程中对均苯四甲酸二酐（PMDA，苯-1,2,4,5-四羧酸二酐）的四个当量羰基进行相对区分，从而导致区域选择性方法产生广泛的部分或全部酯化的产品或在不同位置带有不同酯化基团的产品。均苯四甲酸单酯酸酐在二氯甲烷/三乙胺中由1当量的醇有效形成。在相同条件下，两个不同可以使醇顺序地反应。用2当量的醇，获得通常的间位和对位二酯混合物，通过与HOAc结晶分离。间苯二甲酸和对二苄基均苯四酸酯通过进一步酯化然后氢解而充当其他二酯的区域特异性来源。发现回流的原甲酸三酯能定量在自催化条件下均苯四甲酸体系的酯化; 与预先存在的酯进行的少量酯交换（占总产物的0-5％）归因于可逆酸酐的形成。为了用醇进行一般的酯化反应，使用草酰氯获得了部分酯酰氯。均苯四甲酸三酯在蒸馏时提供邻二酯酸酐，从而提供了进入该系统中最新颖的邻位取代模式的容易途径。通过选择性皂化或通过预先引入一个苄基酯取

表征谱图