ISO 2751:1973 PDF
Urea for industrial use — Determination of the buffer coefficient — Potentiometric method
Urea for industrial use — Determination of the buffer coefficient — Potentiometric method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 1 ноября 1973 г.
- Издание:
- ISO IS 2751 edition 1 version 1
- ICS:
- 71.080.30
Applicable to solutions of conventional concentration. The principle consists in measurement, at (20 0.5) 0C, of the quantity of 0.05 N acid solution required to effect a pH change from 8 to 6 for a solution containing 100 g of urea in 1000 ml of solution. For the measurement a pH meter is used fitted with a glass electrode and a calomel electrode. The method has also been approved by the IUPAC.
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO 2751:1973
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