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中文名稱：草酸
英文名稱：Oxalic Acid訂貨以英文名稱為準。
產品編號：IAEA-C-8CAS：/
品牌：標準物質產地：進口
標準值：見證書分子式：/
規(guī)格 市場價(元) 折后價(元) 供貨周期 數(shù)量 加入購物車 50g 0.00 0.00 3-4周 加入購物車
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產品詳細介紹
IAEA-C-8草酸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 Rh?ne?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 value14C activity
[pMC]Estimated standard
error [pMC]15.03 0.17* * Marked value is expressed as standard uncertainty (1-σ level)
Information valued13CPDB
[‰]Standard deviation
[‰]-18.31 0.11** ** Marked value is standard uncertainty at 1-σ level, calculated from the data given in the respective literature
References:
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