Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

Safety Information

PHR3291

Supelco

Oxalic acid

certified reference material, pharmaceutical secondary standard

Synonym(s):

Ascorbic Acid Impurity E (Ph. Eur.), Sodium Ascorbate Impurity E (Ph. Eur.)

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
HO2CCO2H
CAS Number:
144-62-7
Molecular Weight:
90.03
Beilstein:
385686
MDL number:
MFCD00002573
UNSPSC Code:
41116107
NACRES:
NA.24

grade

certified reference material
pharmaceutical secondary standard

Quality Level

300

vapor density

4.4 (vs air)

vapor pressure

<0.01 mmHg ( 20 °C)

packaging

pkg of 500 mg

mp

189.5 °C (dec.) (lit.)

application(s)

pharmaceutical small molecule

storage temp.

2-30°C

SMILES string

OC(=O)C(O)=O

InChI

1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)

InChI key

MUBZPKHOEPUJKR-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

Pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards

Application

These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.

Analysis Note

These secondary standards offer multi-traceability to the USP, EP and BP primary standards, where they are available.

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.

Footnote

To see an example of a Certificate of Analysis for this material enter LRAA6959(changes by product) in the Documents slot below. This is an example certificate only and may not be the lot that you receive.

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H302 + H312,H318

Hazard Classifications

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

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

PHR3291-500MG:

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
LRAD3657
LRAC7847

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Articles

Separation of Organic Acids with 100% aqueous mobile phase using an Ascentis® Express AQ-C18 HPLC Column

A new RP-HPLC method is proposed for the determination of organic acids in 100% aqueous mobile phase using an Ascentis® Express AQ-C18 column

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service