O0376
草酸 二水合物
≥99.0% (GC), ReagentPlus®
别名:
乙二酸
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关于此项目
线性分子式:
HO2CCO2H · 2H2O
化学文摘社编号:
分子量:
126.07
NACRES:
NA.21
PubChem Substance ID:
eCl@ss:
39021701
UNSPSC Code:
12352100
EC Number:
205-634-3
MDL number:
Beilstein/REAXYS Number:
3679436
产品名称
草酸 二水合物, ReagentPlus®, ≥99.0% (GC)
InChI key
GEVPUGOOGXGPIO-UHFFFAOYSA-N
InChI
1S/C2H2O4.2H2O/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);2*1H2
SMILES string
[H]O[H].[H]O[H].OC(=O)C(O)=O
vapor density
4.4 (vs air)
vapor pressure
<0.01 mmHg ( 20 °C)
product line
ReagentPlus®
assay
≥99.0% (GC)
mp
104-106 °C (lit.)
functional group
carboxylic acid
Quality Level
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Application
Oxalic acid dihydrate may be used:
- As a catalyst in the preparation of tetrahydroquinoline derivatives via imino Diels-Alder reaction.
- As a homogeneous catalyst in the preparation of highly functionalized piperidines via multi-component reaction.
- As an oxidant for the formation of triazolinediones from corresponding urazoles and bisurazoles via oxidation.
- In the transformation of thiols to nitrosothiols by reacting with sodium nitrite.
General description
Oxalic acid dihydrate (OAD) crystals are reported to be monoclinic with P21/n space group. The electron density of OAD has been obtained using X-ray diffraction studies under high resolution.
Legal Information
ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1
存储类别
11 - Combustible Solids
wgk
WGK 1
ppe
dust mask type N95 (US), Eyeshields, Gloves
Charge density studies on small organic molecules around 20 K: oxalic acid dihydrate at 15 K and acetamide at 23 K.
Zobel D, et al.
Acta Crystallographica Section B, Structural Science, 48(6), 837-848 (1992)
A Convenient Method for the Oxidation of Urazoles to Their Corresponding Triazolinediones Under Mild and Heterogeneous Conditions with Sodium Nitrite and Oxalic Dihydrate.
Zolfigolo MA and Mallakpour SE.
Synthetic Communications, 29(22), 4061-4069 (1999)
One-pot five-component synthesis of highly functionalized piperidines using oxalic acid dihydrate as a homogenous catalyst.
Sajadikhah SS, et al.
Chinese Chemical Letters = Zhongguo Hua Xue Kuai Bao, 23(5), 569-572 (2012)
An Efficient Method for Production and Storage of Unstable S-Nitrosothiols Under Mild and Heterogeneous Condition with Sodium Nitrite and Oxalic Acid Dihydrate.
Zolfigol MA, et al.
Synthetic Communications, 29(13), 2277-2280 (1999)
Imino Diels-Alder reactions catalyzed by oxalic acid dihydrate. Synthesis of Tetrahydroquinoline derivatives.
Nagarajan R and Perumal PT.
Synthetic Communications, 31(11), 1733-1736 (2001)
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