4-甲基-2-戊醇

  • 基本信息
  • 制备方法及用途
  • 物化性质
  • 安全信息
  • MSDS
  • 海关数据
  • 结构与计算化学
  • 上游产品
  • 下游产品

4-甲基-2-戊醇 基本信息

中文名称:
4-甲基-2-戊醇 
中文别名:
4-甲基-2-戊醇;
4-甲基-2-戊烯醛 
英文名称:
2-Pentenal, 4-methyl-
英文别名:
4-Methyl-2-pentenal;
4-METHYL-2-PENTENAL 
CAS No.:
5362-56-1
分 子 式:
C6H10O
分 子 量:
98.14
精确分子量:
98.07320
PSA:
17.07000
MDL:
MFCD00800501
EINECS:
226-348-5
InChI:
The Key: RIWPMNBTULNXOH-UHFFFAOYSA-N
风险术语:
R10
分子结构式:
SDS:
查看

4-甲基-2-戊醇 制备方法及用途

制备方法

先由丙酮在碱性催化剂存在下,加压缩合转化成二丙酮醇(见11360)。使用的催化剂为氢氧化钙或氢氧化钡。当催化剂粒子很小、表面积很大时,这一液相接触反应接近于均相反应。反应过程放出热量,低温下平衡转化率大。因此,原料丙酮要预冷,反应在0-10℃下操作。然后,二丙酮醇脱水生成异丙叉丙酮。过程获得的二两样酮醇,一般含量为10-15%,采用常压蒸馏浓缩至80%,同时分离和回收未转化的丙酮。在硝酸、硼酸或苯磺酸等酸性催化剂存在下,加热至100-200℃,二丙酮醇脱水生成异丙叉丙酮,转化率为80-85%。但二丙酮醇能受热分解成丙酮,因此脱水产物需回收基中的丙酮。最后上步反应是异丙叉两样酮加氢生成4-甲基-2-戊醇。实际上,如果以镍或铜为催化剂,气相加氢在常压下进行的条件比较温和时,则得到较多的部分加氢产物甲基异丁基甲酮。当温度控制为170-210℃,氢与异丙叉丙酮的摩尔配比加大时,则较多获得完全加氢产物甲基异丁基甲醇。而一般情况下得到的是两者混合物,精馏分离时采用减压蒸馏系统。也可以甲基-异丁基(甲)酮经镍催化加氢制成,经精馏塔分馏,得成品。

用途简介

4-甲基-2-戊醇是优良的中沸点溶剂。主要用作染料、石油、橡胶、树脂、石蜡、硝基纤维素和乙基纤维素等的溶剂,用作硝化纤维素漆的惰性溶剂,可增加涂料的光泽和平整性,改进泛红性能;在润滑油添加剂制造中用作溶剂等。用于有机合成的原料,矿物浮选洗剂,如萃取硅和硫酸铜矿;还可用于刹车液。还用作发泡剂、分散剂、洗涤剂、增塑剂、表面活性剂、润滑剂及化妆品、照相工业用药品等的制造。

4-甲基-2-戊醇 物化性质

密度:
0.825g/cm3
沸点:
130ºC at 760mmHg
闪点:
33.1ºC
折射率:
1.436-1.444
存储条件/存储方法:

密封储存,储存于阴凉、干燥的库房。远离火源,易燃易爆区。常用氮气保护。冷藏

稳定性相关:

常温常压下稳定,避免与不相容材料,高温接触。

4-甲基-2-戊醇 安全信息

海关代码:
2912190090
危险类别码:
10
安全说明:
16
安全标志:
S16:远离火源。

4-甲基-2-戊醇 MSDS

Name: 4-Methyl-2-Pentenal 95% Material Safety Data Sheet
Synonym: None
CAS: 5362-56-1
Section 1 - Chemical Product   MSDS Name:4-Methyl-2-Pentenal 95% Material Safety Data Sheet
Synonym:None

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
5362-56-1 4-Methyl-2-Pentenal 95 226-348-5
Hazard Symbols: None Listed.
Risk Phrases: 10

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Flammable.
Potential Health Effects
Eye:
May cause eye irritation. May cause chemical conjunctivitis and corneal damage.
Skin:
May cause irritation and dermatitis. May cause cyanosis of the extremities.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated. Ingestion of large amounts may cause CNS depression.
Inhalation:
The toxicological properties of this substance have not been fully investigated. Aspiration may lead to pulmonary edema. Vapors may cause dizziness or suffocation. May cause burning sensation in the chest.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
  Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Vapors may form an explosive mixture with air.
Vapors can travel to a source of ignition and flash back. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water. Containers may explode in the heat of a fire.
Flammable liquid and vapor. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, observing precautions in the Protective Equipment section. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Use with adequate ventilation.
Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Keep away from heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Refrigerator/flammables.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local explosion-proof ventilation to keep airborne levels to acceptable levels.
Exposure Limits CAS# 5362-56-1: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Liquid
Color: colorless
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 70 deg C @ 75.00mm Hg
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: 32 deg C ( 89.60 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: insoluble
Specific Gravity/Density: .8440g/cm3
Molecular Formula: C6H10O
Molecular Weight: 98.14

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable at room temperature in closed containers under normal storage and handling conditions.
Conditions to Avoid:
Incompatible materials, ignition sources, excess heat.
Incompatibilities with Other Materials:
Oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Has not been reported

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 5362-56-1 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
4-Methyl-2-Pentenal - Not listed by ACGIH, IARC, or NTP.

Section 12 - ECOLOGICAL INFORMATION
 

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: FLAMMABLE LIQUID, N.O.S.*
Hazard Class: 3
UN Number: 1993
Packing Group: III
IMO
Shipping Name: FLAMMABLE LIQUID, N.O.S.
Hazard Class: 3.3
UN Number: 1993
Packing Group: III
RID/ADR
Shipping Name: FLAMMABLE LIQUID, N.O.S.
Hazard Class: 3
UN Number: 1993
Packing group: III

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
R 10 Flammable.
Safety Phrases:
S 9 Keep container in a well-ventilated place.
S 16 Keep away from sources of ignition - No
smoking.
S 28A After contact with skin, wash immediately with
plenty of water.
S 33 Take precautionary measures against static
discharges.
S 37 Wear suitable gloves.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 5362-56-1: No information available.
Canada
CAS# 5362-56-1 is listed on Canada's DSL List.
CAS# 5362-56-1 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 5362-56-1 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

4-甲基-2-戊醇 海关数据

中国海关编码:2912190090

概述:
HS: 2912190090. 其他无环醛(不含其他含氧基). 增值税率:17.0%. 退税率:9.0%. 监管条件:无. 最惠国关税:5.5%. 普通关税:30.0%
申报要素:
品名, 成分含量, 用途, 四聚甲醛报明外观
摘要/Summary:
2912190090 acyclic aldehydes without other oxygen function。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

4-甲基-2-戊醇 分子结构与计算化学数据

计算化学数据

1、   疏水参数计算参考值(XlogP):1.3

2、   氢键供体数量:0

3、   氢键受体数量:1

4、   可旋转化学键数量:2

5、   互变异构体数量:

6、   拓扑分子极性表面积(TPSA):17.1

7、   重原子数量:7

8、   表面电荷:0

9、   复杂度:72.2

10、   同位素原子数量:0

11、   确定原子立构中心数量:0

12、   不确定原子立构中心数量:0

13、   确定化学键立构中心数量:1

14、   不确定化学键立构中心数量:0

15、   共价键单元数量:1

4-甲基-2-戊醇 下游产品

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