Carbohydrazide
Description
Carbohydrazide (CAS 497-18-7), also known as N,N'-diaminourea, is an oxygen scavenger and corrosion inhibitor used across industrial water treatment and energy systems. It removes dissolved oxygen from process water and boiler systems, protecting metal surfaces from oxidative corrosion.
In boiler feedwater treatment, this compound replaces hydrazine as a safer oxygen scavenger, reacting with dissolved oxygen to prevent pitting and corrosion in steam generation systems. This application is critical for maintaining the integrity of high-pressure equipment.
Refineries and oil and gas facilities use it to protect pipelines and heat exchangers operating under high-temperature conditions. Its ability to passivate metal surfaces makes it an essential component in heavy industrial maintenance and protection protocols.
In polymer chemistry, it functions as a cross-linking and curing agent for polyurethane and epoxy systems. This application improves the mechanical performance and chemical resistance of the final material, ensuring durability in demanding environments.
It also serves as a catalyst precursor in the synthesis of specialty chemicals and pharmaceutical intermediates. Its versatile chemical structure allows for precise reactions in complex organic synthesis and specialized manufacturing processes.
The product is supplied as a white crystalline powder to meet various industrial requirements. Standard commercial grades include technical and high-purity specifications, with purity levels typically ranging from 98% to 99%+.
Quality control ensures the material meets rigorous industrial benchmarks for consistency and performance. Packaging is available in bags and drums suited to industrial procurement volumes, ensuring safe transport and storage for large-scale operations.
Physical Properties
| Melting Point | 154 °C |
| Boiling Point | 167.26°C (rough estimate) |
| Density | 1.3338 g/cm³ |
| Appearance | white powder |
| Color | White |
| Form | Crystalline Powder |
| Water Solubility | Soluble in water. |
| Vapor Pressure | 0Pa at 25℃ |
| Refractive Index | 1.4164 (estimate) |
| Log P | -2.94 at 21.6℃ |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 29280000 |
| UN Number | 3077 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Documentation
Other Names
N,N'-diaminourea|N-aminohydrazinecarboxamide|hydrazide hydrazinecarboxylic acid|carbonylbis-hydrazine|carbonic dihydrazide|cabazide|4-aminosemicarbazide|1,3-diaminourea
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