IAEA-C-7

• International Chemical Safety card (ISCS): ICSC_0529_Oxalic_acid

IAEA‑C7 and IAEA‑C8 Oxalic Acids were prepared by M. Le Clercq and J. van der Plicht, by using industrially oxalic acids, one produced using the carbohydrate oxidation route in India by the Vaishali firm, Aurangabad, and synthetic oxalic acids produced using the alkaline CO_H₂O synthesis by the company Rhône‑Poulenc, Switzerland. Both materials, one containing modern ¹⁴C levels  and the other one being free of ¹⁴C,  were mixed both together in desired ratios by dissolution and re‑crystallization at Chemie Uettikon GmbH, Lahr, Germany [1], in quantities of 150 kg for each product.

Reference date for decay correction: 1998-01-01

Recommended value

* Marked value is expressed as standard uncertainty  (1-σ level) 
Information value

** Marked value is standard uncertainty at 1-σ level, calculated from the data given in the respective literature
References:

1. LE CLERCQ, M., VAN DER PLICHT, J., GRÖNING, M., New ¹⁴C reference materials with activities of 15 and 50 pMC, Radiocarbon 40 1 (1998) 295-297.