DEHA
Diethylhydroxylamine (DEHA) is an organic compound with the formula (C2H5)2NOH. It is a colorless liquid, although it is usually encountered as a solution.
It is mainly used as an oxygen scavenger in water treatment.
N,N-diethylhydroxylamine; Ethanamine, N-ethyl-N-hydroxy-; DIETHYLHYDROXYLAMINE; N-ethyl-N-hydroxyethanamine; N-etyl-N-hydroxyethanamine; DEHA 85; cas no: 3710-84-7
IUPAC name: N,N-Diethylhydroxylamine
Other names: N-Ethyl-N-hydroxyethanamine
CAS Number: 3710-84-7
N,N-Dethylhydroxylamine; n,n-diethyl-hydroxylamine;
N-ethyl-N-hydroxyethanamine
EC 223-055-4
Chemical formula: C4H11NO
Molar mass: 89.138 g·mol−1
Appearance: Colorless liquid
Odor: Ammoniacal
Density: 867 mg mL−1
Melting point: −26 to −25 °C
Boiling point: 127.6 °C
Solubility in water: Miscible
Vapor pressure: 500 Pa (at 0 °C)
Acidity (pKa): 5.67 (est)
It is a volatile oxygen scavenger and reacts in a ratio of 2.8/1 DEHA/O2. It is employed in high pressure (>70 bar) boiler systems due to a very low rate of reaction at low temperatures and pressures.
Due to its volatility, it acts as an oxygen scavenger throughout the entire boiler system due to steam carryover.
DEHA also reacts with ferrous metals to form a passivized film of magnetite throughout the boiler system.
It has these other uses:
Polymerisation inhibitor
Color stabilizer (photographics)
Corrosion inhibitor
Discoloration inhibitor (phenolics)
Antiozonant
Radical scavenger[5]
DEHA (Diethylhydroxylamine) – DEHA is an excellent chemical product used to prevent corrosion by exhibiting characteristics that have gained it widespread use in industrial water treatment.
It is highly effective at removing dissolved oxygen from boiler systems, and it also provides excellent metal passivation.
It has a higher volatility than other common oxygen scavengers, which allows it to be distributed throughout the entire steam system; thus, protecting the system from oxygen corrosion.
In addition to its metal passivating and oxygen scavenging properties, DEHA degrades (thermal and oxidative degradation) to form neutralizing amines that protect condensate piping from carbonic acid attack, and to maintain proper pH.
DEHA reacts with oxygen to form acetate, nitrogen and water; therefore, it does not add any dissolved solids to the system.
Diethylhydroxylamine
Diethylhydroxylamine (DEHA) is an organic compound [(C2H5)2NOH] is a colorless liquid mainly used as an oxygen scavenger in water treatment.
It is very important to remove oxygen from the boiler feed water as oxygen can cause serious issues in the steam producing plant by fostering corrosion in the total boiler system.
The reasons due to which DEHA find its popularity as an oxygen scavenger is because of its ability to passivate steel and its low toxicity.
As an Oxygen Scavenger, DEHA works efficiently removing oxygen at a rapid rate under normal boiler conditions.
Its volatility is similar to amine and has the ability to provide protection to overall condensate system as well as boiler system.
DEHA (Diethylhydroxylamine) – DEHA is an excellent chemical product used to prevent corrosion by exhibiting characteristics that have gained it widespread use in industrial water treatment.
It is highly effective at removing dissolved oxygen from boiler systems, and it also provides excellent metal passivation.
It has a higher volatility than other common oxygen scavengers, which allows it to be distributed throughout the entire steam system; thus, protecting the system from oxygen corrosion.
In addition to its metal passivating and oxygen scavenging properties, DEHA degrades (thermal and oxidative degradation) to form neutralizing amines that protect condensate piping from carbonic acid attack, and to maintain proper pH.
DEHA reacts with oxygen to form acetate, nitrogen and water; therefore, it does not add any dissolved solids to the system.
DEHA is used in boiler water treatment applications, as an oxygen scavenger for medium and high pressure boilers.
DEHA also functions as a free radical scavenger in polymerization, it is a short stopper in the production of styrene butadiene rubber.
Key Features and Benefits
Completely organic nature
Volatile product, does not add to TDS of blowdown water
Metal passivator and rust converter
Effective condensate line treatment and pH booster
Non-toxic and safer than hydrazine and carbohydrazide based chemicals
Compatible with other boiler treatment chemicals
Compatible with other boiler treatment chemicals
Returns to the feed line with the condensate return so passivates total system
High rate of reaction with oxygen compared with other oxygen scavengers
Offers vapour liquid distribuon ratio of 1.3 and thus distributes all along the condensate circuit
Physico chemical Data
Properties: Typical Value
Form: Clear liquid
Appearance: Light yellow
Odour: Amine like
Solubility: Completely soluble in water
Application Areas
Corrosion inhibitor
Polymerization inhibitor
Colour stabilizer (photographics)
Discoloration inhibitor (phenolics)
Electronic chemicals
Photographic chemicals
Polymer processing
Upstream Oil & Gas Production
Industrial Water Treatment
Diethylhydroxylamine (DEHA) - 85%
Chemical synonyms: N-Ethyl-N-Hydroxy-Ethanamine; Diethylhydroxylamine 85%
Product description
DEHA 85% solutions is available as a yellow liquid with an amine-like odor.
DEHA products are manufactured by the reaction of a triethylamine and a peroxide, followed by purification and distillation. ATAMAN supplies both DEHA Anhydrous and DEHA 85%.
Both DEHA Anhydrous and DEHA 85% function primary as radical and oxygen scavengers.
DEHA is used in boiler water treatment applications, as an oxygen scavenger for medium and high pressure boilers.
DEHA also functions as a free radical scavenger in polymerization, it is a short stopper in the production of styrene butadiene rubber.
Beyond its application as scavenger, DEHA is also used in refinery chemicals and other niche markets, such as:
Microelectronics industry: for example, DEHA is formulated to remove residual photoresist and other residue from microelectronic parts.
Photographic industry: DEHA is blended with other chemicals to produce good color development.
The reduction of toxic heavy metals such as hexavalent chromium to their more environmentally-friendly counterparts such as trivalent chromium is done using an aqueous solution containing DEHA.
Applications/uses
Electronic chemicals
Photographic chemicals
Polymer processing
Upstream O&G-production
Water treatment industrial
Diethylhydroxyamine;N,N-DIETHYLHYDROXYLAMINE, TECH;N,N-Diethylhydroxyla;N-DiethylhydroxylaMine;DiethylhydroxylaMine (DEHA85);(D.E.H.A )N.N-DIETHYLHYDROXYLAMINE;N,N-DiethylhydroxylaMine, 97% 5GR;N,N-DiethylhydroxylaMine
N,N-Diethylhydroxylamine
3710-84-7
DIETHYLHYDROXYLAMINE
Ethanamine, N-ethyl-N-hydroxy-
N-Hydroxydiethylamine
N,N-Diethylhydroxyamine
Hydroxylamine, N,N-diethyl-
UNII-314I05EDVH
CCRIS 964
EINECS 223-055-4
BRN 1731349
AI3-28026
314I05EDVH
N,N-Diethylhydroxylamine, 97%
HSDB 6819
hydroxydiethylamine
Diethyl hydroxykamine
Pennstop 1866
