1.00492
Oxalic acid dihydrate
EMPLURA®
别名:
Oxalic acid dihydrate, Ethanedioic acid
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关于此项目
线性分子式:
(COOH)2 · 2 H2O
化学文摘社编号:
分子量:
126.07
UNSPSC Code:
12352106
EC Index Number:
205-634-3
NACRES:
NA.21
MDL number:
Assay:
≥99% (manganometric)
Form:
solid
vapor pressure
0.000312 hPa ( 25 °C)
Quality Segment
product line
EMPLURA®
assay
≥99% (manganometric)
form
solid
potency
375 mg/kg LD50, oral (Rat)
ign. residue
≤0.05% (800 °C as sulfate)
pH
1.5 (10 g/L in H2O)
bp
149-160 °C/1013 hPa (decomposition)
mp
98-100 °C
transition temp
flash point 157 °C (decomposition)
density
1.65 g/cm3 at 20 °C
bulk density
813 kg/m3
anion traces
chloride (Cl-): ≤0.002%, sulfate (SO42-): ≤0.02%
cation traces
Fe: ≤0.001%, N: ≤0.005%, heavy metals (as Pb): ≤0.002%
storage temp.
2-30°C
SMILES string
[O+H3].[O+H3].[O-]C(=O)C(=O)[O-]
InChI
1S/C2H2O4.2H2O/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);2*1H2
InChI key
GEVPUGOOGXGPIO-UHFFFAOYSA-N
Application
- In Situ Investigation of a Self-Accelerated Cocrystal Formation by Grinding Pyrazinamide with Oxalic Acid.: This study investigates the in situ cocrystal formation of pyrazinamide and oxalic acid dihydrate, emphasizing the self-accelerating nature of the process and its implications for pharmaceutical development (Kulla et al., 2016).
- Deuterium MAS NMR studies of dynamics on multiple timescales: histidine and oxalic acid.: This article examines the dynamics of oxalic acid dihydrate and histidine using deuterium magnetic angle spinning nuclear magnetic resonance, providing insights into molecular motions on various timescales (Chan-Huot et al., 2015).
Analysis Note
Assay (manganometric): ≥ 99.0 %
Chloride (Cl): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.02 %
Heavy metals (as Pb): ≤ 0.002 %
Total nitrogen (N): ≤ 0.005 %
Fe (Iron): ≤ 0.001 %
Residue on ignition (800 °C as sulfate): ≤ 0.05 %
Chloride (Cl): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.02 %
Heavy metals (as Pb): ≤ 0.002 %
Total nitrogen (N): ≤ 0.005 %
Fe (Iron): ≤ 0.001 %
Residue on ignition (800 °C as sulfate): ≤ 0.05 %
Legal Information
EMPLURA is a registered trademark of Merck KGaA, Darmstadt, Germany
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Danger
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1
存储类别
11 - Combustible Solids
wgk
WGK 1