Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
N,N-Diethylhydroxylamine
1. Basic Information
Name: N,N-Diethylhydroxylamine
Alias: DEHA, N,N-Diethyl-N-hydroxyethanamine
CAS No.: 3710-84-7
Molecular Formula: C?H??NO
Molecular Weight: 89.14
Category: Industrial oxygen scavenger, polymerization inhibitor, boiler water treatment agent, antioxidant, chemical synthesis reducing agent
2. Physical and Chemical Properties
Physical Properties
- Appearance: Colorless transparent low-viscosity liquid
- Odor: Mild characteristic amine odor
- Solubility: Fully miscible with water, ethanol, methanol; soluble in acetone; slightly soluble in aliphatic hydrocarbons
- Boiling Point: 128–130 °C (760 mmHg)
- Density (20 °C): 0.898–0.904 g/cm3
- Refractive Index nD20: 1.420–1.424
- Flash Point: 45 °C
- Hygroscopy: Moderately hygroscopic, absorbs water vapor in humid air
- Aqueous property: Weakly alkaline hydroxylamine derivative; stable in neutral cold water; reacts with strong acid to form corresponding salts
Chemical Properties
- Molecular structure: Tertiary hydroxylamine with two ethyl groups attached to nitrogen, containing reactive N-OH functional group
- Oxygen scavenging performance: Strong reducing agent, rapidly reacts with dissolved oxygen in high-temperature boiler water to form harmless small molecules, prevents pipeline corrosion
- Polymerization inhibition: Captures free radicals, inhibits thermal polymerization of styrene, acrylic monomers and unsaturated resins during storage and distillation
- Oxidation susceptibility: Gradually oxidized by air; long-term exposure generates dark nitrogen oxide impurities
- Photostability: Light-sensitive; UV irradiation accelerates oxidative degradation and discoloration
- Thermal stability: Stable below 100 °C; excessive heating decomposes to release irritating amine and nitrogen oxide fumes
- Compatibility: Compatible with neutral water systems and most monomer raw materials; incompatible with strong oxidants, concentrated strong acid and heavy metal salts
3. Main Application Fields
1. High-Pressure Boiler Water Treatment Oxygen Scavenger (Core Application)
Environmentally friendly substitute for hydrazine; removes dissolved oxygen in power plant, industrial steam boiler circulating water to protect steel pipelines from oxidation corrosion
2. Unsaturated Monomer Polymerization Inhibitor
Storage stabilizer for styrene, methyl acrylate, vinyl acetate to prevent self-polymerization during transportation and heating distillation
3. Industrial Antioxidant & Reducing Agent
Antioxidant for lubricants, coating resins; mild reducing reagent for fine chemical synthesis
4. Metal Surface Treatment Auxiliary
Reducing passivation agent for iron and steel surface rust removal pretreatment
4. Quality Specification Table
| Test Item | Standard Specification |
| CAS Number | 3710-84-7 |
| Molecular Formula | C?H??NO |
| Appearance | Colorless clear liquid without suspended solids |
| GC Purity | Water Treatment Grade ≥98.0%, Monomer Stabilizer Grade ≥99.0% |
| Water Content (KF) | ≤0.20% |
| Chroma (APHA) | ≤20 |
| Free Amine Impurity | ≤0.15% |
| Heavy Metals (Pb) | ≤10 ppm |
| Packaging | Sealed amber plastic bottle; bulk 200kg lined plastic drum nitrogen-sealed |
| Storage Condition | Hermetically sealed cool dry warehouse below 25 °C, light shielding, strictly isolated from air and strong oxidants |
| Transportation Requirement | Flammable weakly alkaline amine liquid, Class 3 flammable liquid transport standard, separated from corrosive oxidizing goods |
| Shelf Life | 24 months under nitrogen vacuum sealed storage |
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