Total nitrogen (N) (calculated on dry basis) ≥

46.4

Water insoluble matter ≤

0.005

Biuret ≤

0.8

Phosphate (based on PO43-) ≤

0.00005

Water (H₂O) points ≤

0.7

Oil content ≤

0.0002

Iron (calculated as Fe) ≤

0.0005

Methylene diurea (based on HCHO) ≤

0.0002

Alkalinity (calculated as NH3) ≤

0.03

Granularity d0.85mm-2.80mm ≥

90

0.005

Executive standard

Q/ZYDH001-2020

No formaldehyde is added in the urea production process, and the determination of methylene diurea content is not necessary. This standard is an enterprise standard formulated on the basis of the national standards of GB-2440-2001 "Urea" and GB29518-2013 "Diesel Engine Nitrogen Oxide Reducing Agent Urea Aqueous Solution (AUS32)". This "Urea for Vehicles" standard is dedicated to Guide Zhongyuan Dahua Group Company Ltd.Henan as the enterprise standard for the production of vehicle urea solution raw materials.