M0375
马来酸
ReagentPlus®, ≥99% (HPLC)
别名:
失水苹果酸, 顺丁烯二酸
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线性分子式:
HO2CCH=CHCO2H
化学文摘社编号:
分子量:
116.07
UNSPSC Code:
12352100
NACRES:
NA.21
PubChem Substance ID:
EC Number:
203-742-5
Beilstein/REAXYS Number:
605762
MDL number:
Assay:
≥99% (HPLC)
Concentration:
≤100%
Form:
powder
Grade:
reagent grade
grade
reagent grade
Quality Segment
vapor density
4.0 (at °C, vs air)
vapor pressure
≤0.1 at hPa ( 20 °C)
product line
ReagentPlus®
assay
≥99% (HPLC)
form
powder
concentration
≤100%
impurities
≤2.0% water
ign. residue
≤0.1%
pH
1,3 -at 100 g/l (at 20 °C)
pKa (25 °C)
(1) 1.97, (2) 6.24
bp
157.8 °C/316.0 °F -at 997 hPa
mp
130-135 °C (lit.)
solubility
water: soluble 478,8 g/L at at 20 °C (Completely )
density
1.59 g/mL at 25 °C (lit.)
functional group
carboxylic acid
SMILES string
OC(=O)\C=C/C(O)=O
InChI
1S/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1-
InChI key
VZCYOOQTPOCHFL-UPHRSURJSA-N
General description
马来酸（MA）是一种二羧酸，其在阳离子交换树脂催化剂的存在下可与乙醇酯化形成马来酸二乙酯。它的晶体结构已得到分析。马来酸在铈和溴离子存在下异构化为富马酸的反应动力学和机理已得到研究。马来酸与苯乙烯的自由基共聚反应的反应机理和竞聚率已得到测定。
Analysis Note
再纯化
Legal Information
ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
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警示词
Danger
靶器官
Respiratory system
存储类别
8A - Combustible corrosive hazardous materials
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 3