Carbohydrazide CAS 497-18-7
Carbohydrazide (CAS 497-18-7) is a hydrazine derivative, a white crystalline powder soluble in water with strong reducing behavior. It keeps well sealed. In boiler water it scavenges dissolved oxygen and passivates metal, replacing hydrazine in feed water treatment and acting as a corrosion inhibitor. Beyond water work it is an intermediate for herbicides, dyes and energetic materials. UATChem supplies industrial grades in kraft bags, aluminum foil bags and fiber drums, with COA, TDS and SDS on request.
- CAS: 497-18-7
- EC Number: 207-837-2
- Type: Hydrazine derivative
- Appearance: White crystalline powder
- Main Use: Boiler deoxygenation, passivation, synthesis
- Available Grades: Industrial / technical
- Packaging: 25 kg kraft paper bag
- Bulk Pack: Fiber drum
- Documents: COA, TDS and SDS on request
- Storage: Sealed, dry, away from moisture
- Samples: Available on request
What Carbohydrazide Is
Carbohydrazide, or 1,3-diaminourea, is the hydrazine derivative CO(NHNH2)2, formula CH6N4O. The white crystals dissolve in water, stay low in moisture and carry strong reducing properties, breaking down at melting point. With hydrazine end groups it reacts like hydrazine but is easier to dose as a solid. It removes dissolved oxygen from boiler feed water and forms a protective film. UATChem supplies the powder, with assay on the COA and TDS.
Boiler Deoxygenation, Passivation and Synthesis Uses
- Boiler oxygen scavenging. It removes dissolved oxygen from boiler feed water, replacing hydrazine in power plant and refinery water treatment.
- Metal passivation and corrosion. It forms a protective film on metal surfaces and acts as a corrosion inhibitor in boiler and steam systems.
- Chemical intermediates. It serves as an intermediate for herbicides, pharmaceuticals, dyes and plant growth regulators.
- Energetic and other. It supports energetic materials and propellant work, along with rubber, textile and metal treatment use.
Typical Specifications
Assay and lot data vary by grade and are reported on the COA and TDS, while handling is covered by the SDS; the table below identifies the material.
| Parameter | Typical Value |
|---|---|
| CAS / EC | 497-18-7 / 207-837-2 |
| Synonyms | 1,3-Diaminourea; Carbonic dihydrazide; Carbonyl dihydrazine; CDH |
| Linear Formula | CO(NHNH₂)₂ |
| Molecular Formula | CH₆N₄O |
| Molecular Weight | 90.09 |
| Melting Point | About 152 °C (decomposes) |
| Solubility | Freely soluble in water, insoluble in alcohols and ethers |
| Grades | Industrial / technical |
Packaging, Documents and Ordering
- Orders ship in kraft paper bags or aluminum foil bags, and larger volumes in fiber drums, matching the photos. Keep the solid sealed and dry, away from moisture.
- Every lot comes with a COA, TDS and SDS covering assay and lot data.
- Samples are available for evaluation. To quote, UATChem needs the grade, quantity, packing and destination port.
FAQ
Q: What is carbohydrazide used for?
A: It scavenges oxygen in boiler water, passivates metal and inhibits corrosion, and serves herbicide and dye synthesis.
Q: How is carbohydrazide packed?
A: UATChem supplies the powder in kraft bags, aluminum foil bags and fiber drums, kept sealed and dry, with COA, TDS and SDS.
Q: Does carbohydrazide replace hydrazine in boilers?
A: Yes, it scavenges oxygen in boiler feed water and passivates metal while dosed as a solid instead of hydrazine.
Q: Is carbohydrazide used outside water treatment?
A: It is an intermediate for herbicides and dyes and supports energetic materials, with assay and lot data on the COA and TDS.
Ready to Source? Talk to Our Engineers
Industrial Chemical Raw Materials, Factory-Direct — Quote Within 1 Hour
Stable high-purity supply, flexible packaging and complete compliance documentation for your formulations — exporting worldwide since 2006.
- 1000+Products
- 200+QC Protocols
- 7–15Days Delivery
- Factory-Direct Pricing
- COA / TDS / SDS Included
- Free Samples for Testing
- ISO 9001 Certified


















