草酸 二水合物

HO₂CCO₂H · 2H₂O

126.07

3679436

205-634-3

MFCD00149102

39021701

57654475

NA.21

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.

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.

ReagentPlus is a registered trademark of sigma-aldrich Co. LLC

4.4 (vs air)

200

<0.01 mmHg ( 20 ℃)

ReagentPlus^®

≥99.0% (GC)

104-106 ℃ (lit.)

[H]O[H].[H]O[H].OC(=O)C(O)=O

1S/C2H2O4.2H2O/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);2*1H2

GEVPUGOOGXGPIO-UHFFFAOYSA-N

10 mg in glass bottle
1, 3 kg in poly bottle
100, 500 g in poly bottle

GHS05,GHS07

Danger

H302 + H312 - H318

P264 - P270 - P280 - P301 + P312 - P302 + P352 + P312 - P305 + P351 + P338

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1

11 - Combustible Solids

WGK 1

dust mask type N95 (US), Eyeshields, Gloves