Cyanoguanidine CAS N°: 461-58-5

OECD SIDS
CYANOGUANIDINE
Table 1
Summary of physico-chemical properties
Property Value Reference
Physical state Solid CITI Japan,1998
Melting point 209.5 °C Merck Index, 2001
Boiling point Solidified at 252 °C CITI Japan,1998
Density 1.400 g/cm 3 (25 °C) Merck Index, 2001
Vapour pressure Equal or less than 4.5 X 10 -3 Pa (100 °C) CITI Japan,1998
Water solubility
Partition coefficient n-
octanol/water (log value)
Henry’s law constant
Appearence
40 g/L (25 °C)
decomposition at 80 °C
CITI Japan,1998
-0.52 (25 °C) CITI Japan,1998
2.25 X 10 -10 atm.m 3 /mole
White crystalline odorless powder
HENRYWIN version
1.90, Syracuse Research
Co.
Dutch, 1998 and
Gerhartz, 1985
2 GENERAL INFORMATION ON EXPOSURE
2.1 Production Volumes and Use Pattern
The production volume of cyanoguanidine was estimated at approximately 40,000 t/year worldwide
in 2002. The chemicalis currently not manufactured in Japan. This substance is a basic chemical,
and used in industry for electrical/electronic engineering, metal extraction, refining and processing
of metals, paper, pulp and board, textile processing, pharmaceuticals and intermediates and
approved as an indirect food additive by USFDA. This substance is also used as absorbent,
adhesive, binding, coloring, electroplating, surface-active agent, and agricultural chemical
(fertilizer).
2.2 Environmental Exposure and Fate
2.2.1 Sources of Environmental Exposure
This substance has various uses and exposure to the environment is possible. This substance is
directly released into the environment through its use as a fertilizer.
2.2.2 Photodegradation
Indirect photo-oxidation by hydroxy radicals in the atmosphere is predicted to occur with a half-life
of 3.1 hrs (12-hrs day; 1.5 X 10 6 OH/cm 3 , calculated using AOPWIN version 1.90, Syracuse
Research Co.).
2.2.3 Stability in Water
This substance is considered abiotically stable in water and not hydrolyzed regardless of pH [CITI
Japan, 1998].
6
UNEP PUBLICATIONS