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41706

Oxalic acid

analytical standard

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About This Item

Linear Formula:
HO2CCO2H
CAS Number:
Molecular Weight:
90.03
EC Number:
205-634-3
UNSPSC Code:
12352106
NACRES:
NA.24
Beilstein/REAXYS Number:
385686
MDL number:
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grade

analytical standard

Quality Level

vapor density

4.4 (vs air)

vapor pressure

<0.01 mmHg ( 20 °C)

assay

98.0-102.0% (redox titration)

shelf life

limited shelf life, expiry date on the label

mp

189.5 °C (dec.) (lit.)

application(s)

cleaning products
cosmetics
food and beverages
personal care

format

neat

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

General description

This substance is listed on the positive list of the EU regulation 10/2011 for plastics intended to come into contact with food. Find all available reference materials for compounds listed in 10/2011 here

Oxalic acid is a low-molecular-weight organic acid that occurs naturally in several plants, fruits, vegetables, food and beverage products.

Application

Oxalic acid may be used as an analytical standard for the determination of the analyte in juice samples, honey, food samples fruits, vegetables, alcoholic and non-alcoholic beverages and cosmetic formulations by various chromatography techniques.

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grade

analytical standard

grade

-

grade

-

grade

anhydrous, puriss. p.a.

format

neat

format

-

format

-

format

-

application(s)

cleaning products
cosmetics
food and beverages
personal care

application(s)

-

application(s)

-

application(s)

-

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

200

shelf life

limited shelf life, expiry date on the label

shelf life

-

shelf life

-

shelf life

-

mp

189.5 °C (dec.) (lit.)

mp

189.5 °C (dec.) (lit.)

mp

189.5 °C (dec.) (lit.)

mp

189.5 °C (dec.) (lit.)


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pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

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

Storage Class

11 - Combustible Solids

wgk

WGK 1



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Separation and determination of organic acids and phenolic compounds in fruit juices and drinks by high-performance liquid chromatography
Shui G and Leong LP
Journal of Chromatography A, 977(1), 89-96 (2002)
Gas chromatographic determination of oxalic acid in foods
Ohkawa H
Journal of the Association of Official Analytical Chemists, 68(1), 108-111 (1985)
Simultaneous detection of dehydroascorbic, ascorbic, and some organic acids in fruits and vegetables by HPLC
Nisperos-Carriedo MO, et al.
Journal of Agricultural and Food Chemistry, 40(7), 1127-1130 (1992)



Global Trade Item Number

SKUGTIN
41706-100MG04061834105817

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

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