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Monoethanolamine Structure


Chemical Properties

Melting point 10-11 °C(lit.)
Boiling point 170 °C(lit.)
Density  1.012 g/mL at 25 °C(lit.)
vapor density  2.1 (vs air)
vapor pressure  0.2 mm Hg ( 20 °C)
refractive index  n20/D 1.454(lit.)
Flash point 200 °F
storage temp.  Store at +15°C to +25°C.
solubility  Soluble in benzene, ether, carbon tetrachloride.
pka 9.5(at 25℃)
form  Liquid
color  APHA: ≤15
Specific Gravity 1.012
Relative polarity 0.651
PH 12.1 (100g/l, H2O, 20℃)
explosive limit 3.4-27%(V)
Water Solubility  miscible
Sensitive  Air Sensitive & Hygroscopic
Merck  14,3727
BRN  505944
Henry's Law Constant 1.61(x 10-10 atm?m3/mol) at 20 °C (Bone et al., 1983)
Exposure limits TLV-TWA 3 ppm (~7.5 mg/m3) (ACGIH, MSHA, and OSHA); TLV-STEL 6 ppm (~15 mg/m3) (ACGIH); IDLH 1000 ppm (NIOSH).
Stability Stable. Flammable; incompatible with strong oxidizing agents, strong acids. Hygroscopic.
LogP -2.3--1.91 at 25℃
Substances Added to Food (formerly EAFUS) MONOETHANOLAMINE
FDA 21 CFR 173.315; 175.105; 176.300; 178.3120
CAS DataBase Reference 141-43-5(CAS DataBase Reference)
EWG's Food Scores 3-6
NIST Chemistry Reference Ethanolamine(141-43-5)
EPA Substance Registry System Ethanolamine (141-43-5)
Cosmetics Info Ethanolamine


Signal wordDanger
Hazard statements H302+H312+H332-H314-H335-H412
Precautionary statements P273-P280-P301+P312+P330-P303+P361+P353-P304+P340+P312-P305+P351+P338+P310
Hazard Codes  T,C
Risk Statements  20/21/22-34-39/23/24/25-23/24/25-10-52/53
Safety Statements  26-36/37/39-45-61
RIDADR  UN 2924 3/PG 3
WGK Germany  1
RTECS  KJ5775000
Autoignition Temperature 410 °C
HazardClass  8
PackingGroup  III
HS Code  29221100
Hazardous Substances Data 141-43-5(Hazardous Substances Data)
Toxicity LD50 orally in rats: 10.20 g/kg (Smyth)
IDLA 30 ppm
NFPA 704:
3 0

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