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CAS 109-89-7

CAS 109-89-7 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 109-89-7
CAS 109-89-7PubChem CID 8021

Diethylamine

Diethylamine is a secondary aliphatic amine where both N-substituents are ethyl. It is a conjugate base of a diethylammonium. — ChEBI

IUPAC name
N-ethylethanamine
Molecular formula
C4H11N
Molecular weight
73.14 g/mol
Exact mass
73.089149355 Da
XLogP3
0.6
Topological polar surface area
12.0 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
0

Also known as

N,N-DiethylamineEthanamine, N-ethyl-DiaethylaminDietilaminaDwuetyloaminaB035PIS86WAI3-24215CHEBI:85259
16 more reported names
RefChem:5748203-716-3Diethaminediethyl amineDiethyl-amineMelphalan EP Impurity KEt2NH(C2H5)2NHethane, ethylamino-DiethylaminN-Ethyl-EthanamineDiaethylamin [German]Dietilamina [Italian]Dwuetyloamina [Polish]CCRIS 4792HSDB 524
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match8021

Attributed physical-property, hazard, environmental and use annotations.

  • Substance: Diethylamine Source: NTP Technical Reports
  • NTP Technical Report: TR-566: Toxicology and Carcinogenesis Studies of Diethylamine (CASRN 109-89-7) in F344/N Rats and B6C3F1 Mice (Inhalation studies) (2011 ) Source: NTP Technical Reports
  • Peer Review Date: 11/19/09 Source: NTP Technical Reports
  • Conclusion for Male Rat: No Evidence Source: NTP Technical Reports
  • Conclusion for Female Rat: No Evidence Source: NTP Technical Reports
  • Conclusion for Male Mice: No Evidence Source: NTP Technical Reports
  • Conclusion for Female Mice: No Evidence Source: NTP Technical Reports
  • Summary: Under the conditions of these 2-year inhalation studies, there was no evidence of carcinogenic activity of diethylamine in male or female F344/N rats exposed to 31, 62.5, or 125 ppm. There was no evidence of carcinogenic activity of diethylamine in male or female B6C3F1 mice exposed to 16, 31, or 62.5 ppm.; Exposure to diethylamine resulted in increased incidences of nonneoplastic lesions of the nose in male and female rats and mice, of the cornea in male rats, and of the pleura and lung in female rats. Source: NTP Technical Reports
  • Carcinogen Classification: No indication of carcinogenicity to humans (not listed by IARC). Source: Toxin and Toxin Target Database (T3DB)
  • First Aid: EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.; SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.; INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whene Source: CAMEO Chemicals
  • ERG2024, Guide 132 (Diethylamine): General First Aid:; · Call 911 or emergency medical service.; · Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.; · Move victim to fresh air if it can be done safely.; · Administer oxygen if breathing is difficult.; · If victim is not breathing:; -- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.; -- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).; -- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.; · Remove and isolate contaminated clothing and shoes.; · For minor skin contact, avoid spreading material on unaffected skin.; · In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.; · For severe burns, immediate medical attention is required.; · Effects of exposure (inhalation, ingestion, Source: Emergency Response Guidebook (ERG)
  • First Aid: (General first aid procedures); Eye: Irrigate immediately - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.; Skin: Water flush immediately - If this chemical contacts the skin, immediately flush the contaminated skin with water. If this chemical penetrates the clothing, immediately remove the clothing and flush the skin with water. Get medical attention promptly.; Breathing: Respiratory support; Swallow: Medical attention immediately - If this chemical has been swallowed, get medical attention immediately. Source: The National Institute for Occupational Safety and Health (NIOSH)
  • Signal: Danger Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • GHS Hazard Statements: H225: Highly Flammable liquid and vapor [Danger Flammable liquids]; H302: Harmful if swallowed [Warning Acute toxicity, oral]; H312: Harmful in contact with skin [Warning Acute toxicity, dermal]; H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H332: Harmful if inhaled [Warning Acute toxicity, inhalation] Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Precautionary Statement Codes: P210, P233, P240, P241, P242, P243, P260, P261, P264, P270, P271, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P317, P321, P330, P362+P364, P363, P370+P378, P403+P235, P405, and P501 (click each P-code to see the statement) Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Signal: Danger Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H225 (100%): Highly Flammable liquid and vapor [Danger Flammable liquids]; H301+H311+H331 (17%): Toxic if swallowed, in contact with skin or if inhaled [Danger Acute toxicity, oral; acute toxicity, dermal; acute toxicity, inhalation]; H301 (27.6%): Toxic if swallowed [Danger Acute toxicity, oral]; H302 (72.4%): Harmful if swallowed [Warning Acute toxicity, oral]; H311 (31.3%): Toxic in contact with skin [Danger Acute toxicity, dermal]; H312 (68.7%): Harmful in contact with skin [Warning Acute toxicity, dermal]; H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318 (30.8%): Causes serious eye damage [Danger Serious eye damage/eye irritation]; H331 (17%): Toxic if inhaled [Danger Acute toxicity, inhalation]; H332 (83%): Harmful if inhaled [Warning Acute toxicity, inhalation]; H335 (31.2%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P210, P233, P240, P241, P242, P243, P260, P261, P262, P264, P264+P265, P270, P271, P280, P301+P316, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P317, P319, P321, P330, P361+P364, P362+P364, P363, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 2588 reports by companies from 27 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: NITE-CMC
  • GHS Hazard Statements: H225: Highly Flammable liquid and vapor [Danger Flammable liquids]; H301: Toxic if swallowed [Danger Acute toxicity, oral]; H311: Toxic in contact with skin [Danger Acute toxicity, dermal]; H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]; H332: Harmful if inhaled [Warning Acute toxicity, inhalation]; H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]; H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure] Source: NITE-CMC
  • Precautionary Statement Codes: P210, P233, P240, P241, P242, P243, P260, P261, P262, P264, P264+P265, P270, P271, P280, P301+P316, P301+P330+P331, P302+P352, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P308+P316, P316, P317, P319, P321, P330, P361+P364, P363, P370+P378, P403+P235, P405, and P501 (click each P-code to see the statement) Source: NITE-CMC
  • GHS Hazard Statements: H225: Highly Flammable liquid and vapor [Danger Flammable liquids]; H301: Toxic if swallowed [Danger Acute toxicity, oral]; H311: Toxic in contact with skin [Danger Acute toxicity, dermal]; H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]; H332: Harmful if inhaled [Warning Acute toxicity, inhalation]; H371: May cause damage to organs [Warning Specific target organ toxicity, single exposure]; H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure] Source: NITE-CMC
  • Signal: Danger Source: Hazardous Chemical Information System (HCIS), Safe Work Australia
  • NFPA Health Rating: 3 - Materials that, under emergency conditions, can cause serious or permanent injury. Source: Hazardous Substances Data Bank (HSDB)
  • NFPA Fire Rating: 3 - Liquids and solids that can be ignited under almost all ambient temperature conditions. Materials produce hazardous atmospheres with air under almost all ambient temperatures or, though unaffected by ambient temperatures, are readily ignited under almost all conditions. Source: Hazardous Substances Data Bank (HSDB)
  • NFPA Instability Rating: 0 - Materials that in themselves are normally stable, even under fire conditions. Source: Hazardous Substances Data Bank (HSDB)
  • Toxicity Summary: IDENTIFICATION AND USE: Diethylamine (DEN) is a colorless liquid with fishy, ammonia-like odor. It is used in petroleum industry, in flotation agents, dyes, pharmaceuticals. It also used as a selective solvent for the removal of impurities from oils, fats, and waxes, and as a corrosion inhibitor in iron, steel, and metal industries. HUMAN EXPOSURE AND TOXICITY: Adult volunteers were exposed to 25 ppm (75 mg/cu m) diethylamine in a climate chamber for 15 min in order to study the acute nasal reactions to an exposure equivalent to the present threshold limit value-short-term exposure limit. Exposure to a concentration increasing from 0 to 12 ppm took place for 60 min, equal to an average concentration of 10 ppm (30 mg/cu m). A moderate to strong olfactory response and distinct nasal and eye irritation were observed. Edema of the epithelium of the cornea, generally without pain, has been produced by diethylamine vapors, causing colored halos to be seen around lights. The edema of the corneal epithelium, which is principally responsible for the disturbance of vision, clears spontaneously by the next day, but after exceptionally intense exposures the edema and blurring have taken severa Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Bioconcentration: An estimated BCF of 3 was calculated in fish for diethylamine(SRC), using a log Kow of 0.58(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 27(SRC), determined from a structure estimation method(2), indicates that diethylamine is expected to have very high mobility in soil(SRC). The pKa of diethylamine is 11.09(3), indicating that this compound will exist entirely in the cation form in the environment and cations generally adsorb more strongly to soils containing organic carbon and clay than their neutral counterparts(4). Volatilization of diethylamine from moist soil surfaces is not expected to be an important fate process(SRC) given its cationic state(SRC). Diethylamine is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 237 mm Hg at 25 °C(5). Between 69 and 89% of the Theoretical BOD was achieved for diethylamine using an activated sludge inoculum digested for 4 weeks(6), suggesting biodegradation may be an important fate process in soil(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 27(SRC), determined from a structure estimation method(2), indicates that diethylamine is not expected to adsorb to suspended solids and sediment(SRC). A pKa of 11.09(3) indicates diethylamine will exist entirely in the cation form at pH values of 5 to 9 and, therefore, volatilization from water surfaces is not expected to be an important fate process(SRC). Diethylamine is not expected to undergo hydrolysis in the environment due to the lack of functional groups that hydrolyze under environmental conditions(4). According to a classification scheme(5), an estimated BCF of 3(SRC), from its log Kow of 0.58(6) and a regression-derived equation(2), suggests the potential for bioconcentration in aquatic organisms is low(SRC). Diethylamine, present at 10 ppm, reached 38% of its Theoretical BOD in 12 days using freshwater/sediment inoculum(7). The biodegradation half-life of diethylamine in stream water was 0.9 days at an initial concentration of 10 mg/L(8). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), diethylamine, which has a vapor pressure of 237 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase diethylamine is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 5 hours(SRC), calculated from its rate constant of 8.1X10-11 cu cm/molecule-sec at 25 °C(SRC) that was derived using a structure estimation method(3). Diethylamine does not contain chromophores that absorb at wavelengths >290 nm(4) and, therefore, is not expected to be susceptible to direct photolysis by sunlight(SRC). Source: Hazardous Substances Data Bank (HSDB)

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
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NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 109-89-7

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