2,3-二溴-4-甲基噻吩 | 125257-38-7

• 物质功能分类: 医药中间体 - 杂环化合物 - 噻吩类化合物
• 分子结构分类: 有机化合物 - 有机卤素化合物 - 芳基卤化物
• 中文名称: 2,3-二溴-4-甲基噻吩
• 中文别名: 2，3-二溴-4-甲基噻吩
• 英文名称: 2,3-Dibrom-4-methylthiophen
• 英文别名: 2,3-dibromo-4-methyl-thiophene；2,3-Dibrom-4-methyl-thiophen；2,3-Dibromo-4-methylthiophene
• CAS: 125257-38-7
• 化学式: C₅H₄Br₂S
• 分子量: 255.961
• InChiKey: WBYLRMUZATVKLP-UHFFFAOYSA-N

物化性质

• 沸点：
  241℃
• 密度：
  1.984 g/mL at 25 °C
• 闪点：
  100℃

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  8
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  28.2
• 氢给体数：
  0
• 氢受体数：
  1

安全信息

• 危险品标志：
  Xn
• 安全说明：
  S26,S36/37/39
• 危险类别码：
  R22,R41
• WGK Germany：
  3

SDS

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Section 1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE
Product name : 2,3-Dibromo-4-methylthiophene

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Section 2. HAZARDS IDENTIFICATION
Classification of the substance or mixture
According to Regulation (EC) No1272/2008
Acute toxicity, Oral (Category 4)
Serious eye damage (Category 1)
According to European Directive 67/548/EEC as amended.
Harmful if swallowed. Risk of serious damage to eyes.
Label elements
Pictogram
Signal word Danger
Hazard statement(s)
H302 Harmful if swallowed.
H318 Causes serious eye damage.
Precautionary statement(s)
P280 Wear protective gloves/eye protection/face protection.
P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove
contact lenses, if present and easy to do. Continue rinsing.
Hazard symbol(s)
Xn Harmful
R-phrase(s)
R22 Harmful if swallowed.
R41 Risk of serious damage to eyes.
S-phrase(s)
S26 In case of contact with eyes, rinse immediately with plenty of water and
seek medical advice.
S36/37/39 Wear suitable protective clothing, gloves and eye/face protection.
Other hazards
Lachrymator.

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Section 3. COMPOSITION/INFORMATION ON INGREDIENTS
Formula : C5H4Br2S
Molecular Weight : 255,96 g/mol
CAS-No. EC-No. Index-No. Classification Concentration
2,3-Dibromo-4-methylthiophene
125257-38-7 - - Acute Tox. 4; Eye Dam. 1; -
H302, H318
Xn, R22 - R41
For the full text of the H-Statements mentioned in this Section, see Section 16.

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Section 4. FIRST AID MEASURES
General advice
Consult a physician. Show this safety data sheet to the doctor in attendance.
If inhaled
If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.
In case of skin contact
Wash off with soap and plenty of water. Consult a physician.
In case of eye contact
Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
If swallowed
Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

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Section 5. FIRE-FIGHTING MEASURES
Suitable extinguishing media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Special protective equipment for fire-fighters
Wear self contained breathing apparatus for fire fighting if necessary.

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Section 6. ACCIDENTAL RELEASE MEASURES
Personal precautions
Use personal protective equipment. Avoid breathing vapors, mist or gas. Ensure adequate ventilation.
Evacuate personnel to safe areas.
Environmental precautions
Do not let product enter drains.
Methods and materials for containment and cleaning up
Soak up with inert absorbent material and dispose of as hazardous waste. Keep in suitable, closed
containers for disposal.

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Section 7. HANDLING AND STORAGE
Precautions for safe handling
Avoid contact with skin and eyes. Avoid inhalation of vapour or mist.
Normal measures for preventive fire protection.
Conditions for safe storage
Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully
resealed and kept upright to prevent leakage.
Recommended storage temperature: 2 - 8 °C
Moisture sensitive. Light sensitive. Heat sensitive. Handle and store under inert gas.

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Section 8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Personal protective equipment
Respiratory protection
Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator with
multi-purpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup to
engineering controls. If the respirator is the sole means of protection, use a full-face supplied air
respirator. Use respirators and components tested and approved under appropriate government
standards such as NIOSH (US) or CEN (EU).
Hand 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.
Eye protection
Tightly fitting safety goggles. Faceshield (8-inch minimum). Use equipment for eye protection tested and
approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin and body protection
Complete suit protecting against chemicals, The type of protective equipment must be selected according
to the concentration and amount of the dangerous substance at the specific workplace.
Hygiene measures
Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at
the end of workday.

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Section 9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance
Form liquid
Safety data
pH no data available
Melting point no data available
Boiling point no data available
Flash point > 110 °C
Ignition temperature no data available
Lower explosion limit no data available
Upper explosion limit no data available
Density 1,984 g/cm3
Water solubility no data available

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Section 10. STABILITY AND REACTIVITY
Chemical stability
Stable under recommended storage conditions.
Conditions to avoid
no data available
Materials to avoid
Strong oxidizing agents
Hazardous decomposition products
Hazardous decomposition products formed under fire conditions. - Carbon oxides, Sulphur oxides, Hydrogen
bromide gas

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Section 11. TOXICOLOGICAL INFORMATION
Acute toxicity
no data available
Skin corrosion/irritation
no data available
Serious eye damage/eye irritation
no data available
Respiratory or skin sensitization
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
Potential health effects
Inhalation May be harmful if inhaled. May cause respiratory tract irritation.
Ingestion Harmful if swallowed.
Skin May be harmful if absorbed through skin. May cause skin irritation.
Eyes Causes eye burns.
Signs and Symptoms of Exposure
To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly
investigated.
Additional Information
RTECS: no data available

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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
PBT and vPvB assessment
no data available
Other adverse effects
no data available

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Section 13. DISPOSAL CONSIDERATIONS
Product
Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed professional
waste disposal service to dispose of this material.
Contaminated packaging
Dispose of as unused product.

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Section 14. TRANSPORT INFORMATION
ADR/RID
UN-Number: 2810 Class: 6.1 Packing group: III
Proper shipping name: TOXIC LIQUID, ORGANIC, N.O.S. (2,3-Dibromo-4-methylthiophene)
IMDG
UN-Number: 2810 Class: 6.1 Packing group: III EMS-No: F-A, S-A
Proper shipping name: TOXIC LIQUID, ORGANIC, N.O.S. (2,3-Dibromo-4-methylthiophene)
Marine pollutant: No
IATA
UN-Number: 2810 Class: 6.1 Packing group: III
Proper shipping name: Toxic liquid, organic n.o.s. (2,3-Dibromo-4-methylthiophene)

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SECTION 15 - REGULATORY INFORMATION
N/A

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SECTION 16 - ADDITIONAL INFORMATION
N/A

反应信息

• 作为反应物：
  描述：

  2,3-二溴-4-甲基噻吩 在 sodium hydroxide 、 溴乙烷 、 乙醚 、 溴 、 magnesium 、 溶剂黄146 、 sodium chloride 、 mercury(II) oxide 作用下， 生成 2,4,-二溴-3-甲基噻吩
  参考文献：
  名称：

  Steinkopf; Nitschke, Justus Liebigs Annalen der Chemie, 1938, vol. 536, p. 135,142

  摘要：

  DOI：
• 作为产物：
  描述：

  4,5-二溴-3-甲基-噻吩-2-羧酸 在 盐酸 、 溶剂黄146 、 mercury(II) oxide 作用下， 生成 2,3-二溴-4-甲基噻吩
  参考文献：
  名称：

  Steinkopf; Nitschke, Justus Liebigs Annalen der Chemie, 1938, vol. 536, p. 135,142

  摘要：

  DOI：

文献信息

• Process for the preparation of thiophene derivatives
  申请人：Hoechst Aktiengesellschaft

  公开号：US05100520A1

  公开（公告）日：1992-03-31

  Selectively dehalogenated thiophene derivatives are obtained from compounds of the formula II ##STR1## by an electrochemical reaction in a divided electrolysis cell in the presence of a suitable solvent, an onium compound or a compound which is converted into an onium compound in the electrolyte, and a conducting salt. Thiophene derivatives are important intermediates in the production of pharmaceuticals and plant protection agents.

  选择性脱卤硫吡啶衍生物可以通过公式II的化合物进行电化学反应，在适当的溶剂、离子化合物或在电解液中转化为离子化合物的化合物以及导电盐的存在下，在分隔的电解池中获得。硫吡啶衍生物是制药和植物保护剂生产中的重要中间体。
• Steinkopf; Jacob, Justus Liebigs Annalen der Chemie, 1935, vol. 515, p. 273,277
  作者：Steinkopf、Jacob

  DOI：——

  日期：——
• Schoening, Axel; Friedrichsen, Willy, Zeitschrift fur Naturforschung, B: Chemical Sciences, 1989, vol. 44, # 7, p. 825 - 833
  作者：Schoening, Axel、Friedrichsen, Willy

  DOI：——

  日期：——
• SCHONING, AXEL;FRIEDRICHSEN, WILLY, Z. NATURFORSCH. B., 44,(1989) N, C. 825-833
  作者：SCHONING, AXEL、FRIEDRICHSEN, WILLY

  DOI：——

  日期：——
• Steinkopf; Nitschke, Justus Liebigs Annalen der Chemie, 1938, vol. 536, p. 135,142
  作者：Steinkopf、Nitschke

  DOI：——

  日期：——