92816

Supelco

Maleic acid

Standard for quantitative NMR, TraceCERT®

Synonym(s):
Toxilic acid, cis-Butenedioic acid
Linear Formula:
HO2CCH=CHCO2H
Molecular Weight:
116.07
Beilstein/REAXYS Number:
605762
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.24

Quality Level

grade

Standard for quantitative NMR
certified reference material
TraceCERT®

description

qNMR Standard for D2O and organic solvents (6.2 ppm)

form

neat

shelf life

limited shelf life, expiry date on the label

application(s)

gas chromatography (GC): suitable
qNMR: suitable

mp

130-135 °C (lit.)

density

1.59 g/mL at 25 °C (lit.)

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format

neat

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

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General description

Maleic acid can be obtained via distillation of malic acid. It can undergo conversion to fumaric acid via heating in the presence of a strong acid.
This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025 and ISO 17034. This CRM is traceable to primary material from an NMI, e.g. NIST or NMIJ.
Certified content by quantitative NMR incl. uncertainty and expiry date are given on the certificate.
Download your certificate at: http://www.sigma-aldrich.com.

Other Notes

Chemcial Shift: 6.2 ppm (chemical shifts may slightly vary depending on the experimental conditions)
Suitable NMR solvents: D2O, MeOD, DMSO-d6

Legal Information

TraceCERT is a registered trademark of Sigma-Aldrich Co. LLC

pictograms

CorrosionExclamation mark

signalword

Danger

hazcat

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

Target Organs

Respiratory system

storage_class_code

8B - Non-combustible, corrosive hazardous materials

WGK Germany

WGK 1

Certificate of Analysis

Certificate of Origin

Miller AW
Elements of Chemistry: Theoretical and Practical, Volume 3, 3(6) (1880)
Spencer.NJ, et al. et al.
Chemistry: Structure and Dynamics, (5) (2010)
Theresia Klose et al.
Colloids and surfaces. B, Biointerfaces, 51(1), 1-9 (2006-06-27)
The adsorption of human serum albumin (HSA) and lysozyme (LSZ) on pure as well as maleic acid (MA) copolymer coated spherical soda lime glass particles was investigated under flowing conditions. Coating the glass particles with two different maleic acid copolymers...
J M Herreras et al.
Ophthalmology, 99(7), 1082-1088 (1992-07-01)
This study was undertaken to see whether long-term locally applied ocular medications produced any alterations in the ocular surface, and, in particular, whether it caused damage to the mucus layer of the tear film. The authors studied the ocular surface...
Hanna Kotikoski et al.
Acta ophthalmologica Scandinavica, 81(4), 355-360 (2003-07-16)
To investigate whether a nitric oxide donor given as a single oral dose is able to modify aqueous humour flow in healthy volunteers. Ten healthy volunteers participated in a randomized, double-masked and placebo-controlled cross-over study. Aqueous humour flow was assessed...
Articles
The signal ratio of two different protons can be measured with tremendous precision, which enables the generation of certified reference materials for use as qNMR standards.
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