4,4'-Methylenebis(2-methylcyclohexylamine) Property

Melting point:

-7°C

Boiling point:

93-100 °C(lit.)

Density 

0.94 g/mL at 25 °C(lit.)

vapor pressure 

0.08Pa at 20℃

refractive index 

n20/D 1.499(lit.)

Flash point:

>230 °F

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

solubility 

3.6g/l

form 

clear liquid

pka

11.03±0.70(Predicted)

color 

Colorless to Light yellow to Light orange

PH

11 (3.6g/l, H2O, 20℃)

explosive limit

0.5-2.8%(V)

Water Solubility 

2.01g/L at 20℃

InChIKey

IGSBHTZEJMPDSZ-UHFFFAOYSA-N

LogP

2.3 at 23℃

CAS DataBase Reference

6864-37-5(CAS DataBase Reference)

EPA Substance Registry System

Cyclohexanamine, 4,4'-methylenebis[2-methyl- (6864-37-5)

Safety

Hazard Codes 

T,C,N

Risk Statements 

22-23/24-35-51/53

Safety Statements 

26-36/37/39-45-61

RIDADR 

UN 2927 6.1/PG 2

WGK Germany 

3

HazardClass 

8

PackingGroup 

II

HS Code 

29213000

Toxicity

LC50 ihl-rat: 420 mg/m3/4H NTIS** OTS0539620-1

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H311Toxic in contact with skin

H314Causes severe skin burns and eye damage

H330Fatal if inhaled

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

4,4'-Methylenebis(2-methylcyclohexylamine) Chemical Properties,Usage,Production

Chemical Properties

Colorless transparent viscous liquid

Chemical Properties

4,4'-Methylenebis(2-methylcyclohexylamine) (MACM) is a colorless/yellowish liquid with a water solubility of 3.6 g/l at 20°C and a vapor pressure of 0.08 Pa at 20°C. The measured log KOW is 2.51 at 25 °C. However, due to the Lewis base character of the substance, the experimental determination of the log KOW is inaccurate. The density of the substance (ca. 0.95 g/cm3 at 20°C) is virtually the same as that of water.

Uses

4,4'-Methylenebis(2-methylcyclohexylamine) can be used as epoxy curing agents.

Uses

4,4′-Methylenebis(2-methylcyclohexylamine) (MMCA) may be used:

• in the synthesis of fully aliphatic polyimides
• in the synthesis of fully aliphatic polyimide-siloxanes (APISiO)
• to prepare epoxy resin with trimethylolpropane triglycidyl ether, used for the characterization of the structural organization in dragline silk by transmission X-ray microscopy (STXM).

General Description

4,4′-Methylenebis(2-methylcyclohexylamine) is an alicyclic diamine.

Hazard

Moderately toxic by inhalation.

Flammability and Explosibility

Non flammable

Safety Profile

Moderately toxic by inhalation.When heated to decomposition it emits toxic vapors ofNOx.

Synthesis

Add 2000kg 3,3'-dimethyl-4,4'-diaminodiphenylmethane and 2000kg tetrahydrofuran to an autoclave with a volume of 6000L. Then, 100Kg 5% Ru/Al2O3 catalyst and 100Kg aluminum ammonium sulfate will be added, and the air in the autoclave will be replaced with hydrogen after sealing. Pour in 6MPa hydrogen, heat the autoclave to 160°C, adjust the hydrogen valve to maintain the pressure at 8MPa, and stir vigorously for 4 hours. After cooling, samples were taken and detected by gas chromatography-mass spectrometry. The detection results showed that the conversion rate of 3,3'-dimethyl-4,4-diaminodicyclohexylmethane was 100%, and the 4,4'-Methylenebis(2-methylcyclohexylamine) (MACM) yield was 99.4%.