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LC5773 Tetramethylurea
for synthesis


Order number Packaging Quantity Price €
AC32773 Glass bottle 100 ml 24.975
AC32773 Glass bottle 250 ml 54.45


Product information
Synonyms TMU
Hill Formula C5H12N2O
Chemical formula (CH3)2NCON(CH3)2
HS Code 2924 19 00
EC number 211-173-9
Molar mass 116.16 g/mol
CAS number 632-22-4


Chemical and physical data
Solubility 1000 g/l (20 °C)
Melting point -1 °C
Molar mass 116.16 g/mol
Density 0.97 g/cm3 (20 °C)
Boiling point 176 °C (1013 hPa)
Vapor pressure 13.3 hPa (61 °C)
Flash point 75 °C DIN 51758
Refractive index 1.4493 (20 °C, 589 nm)


Safety information according to GHS
Hazard Statement(s) H302: Harmful if swallowed.
H360D: May damage the unborn child.
Precautionary Statement(s) P201: Obtain special instructions before use.
P262: Do not get in eyes, on skin, or on clothing.
Signal Word Danger
Hazard Pictogram(s)
Storage class 6.1A Combustible substances, toxic
WGK WGK 2 water endangering
Disposal 9
Carcinogenic compounds and flammable compounds labelled “Highly toxic” or “Toxic”: container F. Alkyl sulfates are carcinogenic; Take particular care to avoid inhalation and skin contact. To neutralize alkyl sulfates, add dropwise (from a dropping funnel) to concentrated ice-cool Ammonia solution (Cat.No. 105426) with vigorous stirring. Before placing in container D, check the pH with pH Universal indicator strips (Cat.No. 109535).


Safety information
R Phrase R 61-22
May cause harm to the unborn child.Also harmful if swallowed.
S Phrase S 53-24/25-37-45
Avoid exposure – obtain special instructions before use.Avoid contact with skin and eyes.Wear suitable gloves.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger toxic for reproduction, harmful
Hazard Symbol Toxic


Toxicological data
LD 50 oral LD50 rat 794 mg/kg
LD 50 dermal LD50 rabbit 3160 mg/kg


Assay (GC, area%) ≥ 99 %
Density (d 20 °C/ 4 °C) 0.967 – 0.968
Water (K. F.) ≤ 0.3 %
Identity (IR) passes test