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DANSK DS/EN 15705 PDF

DANSK DS/EN 15705 PDF

Name:
DANSK DS/EN 15705 PDF

Published Date:
12/22/2023

Status:
[ Active ]

Description:

Inorganic fertilizers – Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC)

Publisher:
Dansk Standard

Document status:
Active
Format:
Electronic (PDF)
Delivery time:
10 minutes
Delivery time (for Russian version):
200 business days
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$15.3
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This document specifies a method for the determination of methylen-urea (MU) oligomers in inorganic fertilizers using high-performance liquid chromatography (HPLC). The method is applicable to all fertilizers which do not contain interfering organic compounds. NOTE – By the condensation of urea and formaldehyde, several oligomers are formed, such as methylen-diurea (MDU), dimethylen-triurea (DMTU), trimethylen-tetraurea (TMTU) and higher oligomers. The three molecules named here are the most soluble in water, while the higher compounds are insoluble in hot water, but their nitrogen is available for plants by microbiological decomposition. Also, urea is always a companion of MU-oligomers.


Edition : 23#
File Size : 1 file , 1.1 MB
Number of Pages : 18
Product Code(s) : DS-017, DS-017
Published : 12/22/2023

History

DANSK DS/EN 15705
DANSK DS/EN 15705
Published Date: 12/22/2023
Inorganic fertilizers – Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC)
$15.3
DANSK DS/EN 15705
DANSK DS/EN 15705
Published Date: 05/15/2010
Fertilizers – Determination of urea condensates using high-performance liquid chromatography (HPLC) – Isobutylidenediurea and crotonylidenediurea (method A) and methylen-urea oligomers (method B)
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