Chinese Japanese Germany Korea


Methylene-bis(4-cyclohexylisocyanate) structure
Chemical Name:
Molecular Formula:
Formula Weight:
MOL File:

Methylene-bis(4-cyclohexylisocyanate) Properties

Melting point:
Boiling point:
168 °C / 1.5mmHg
1.066 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.497(lit.)
Flash point:
>230 °F
Clear colorless
Water Solubility 
Exposure limits
TLV-TWA 0.0535 mg/m3 (0.005 ppm) (ACGIH).
CAS DataBase Reference
5124-30-1(CAS DataBase Reference)
NIST Chemistry Reference
Cyclohexane, 1,1'-methylenebis[4-isocyanato-(5124-30-1)
EPA Substance Registry System
Cyclohexane, 1,1'-methylenebis[4-isocyanato- (5124-30-1)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  T
Risk Statements  23-36/37/38-42/43
Safety Statements  26-28-38-45-1/2
RIDADR  UN 2206 6.1/PG 2
WGK Germany  1
RTECS  NQ9250000
HazardClass  6.1
PackingGroup  III
Hazardous Substances Data 5124-30-1(Hazardous Substances Data)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,P501
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H370 Causes damage to organs Specific target organ toxicity, single exposure Category 1 Danger P260, P264, P270, P307+P311, P321,P405, P501
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P272 Contaminated work clothing should not be allowed out of the workplace.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P284 Wear respiratory protection.
P391 Collect spillage. Hazardous to the aquatic environment
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P307+P311 IF exposed: call a POISON CENTER or doctor/physician.
P342+P311 IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician.
P405 Store locked up.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P501 Dispose of contents/container to..…

Methylene-bis(4-cyclohexylisocyanate) price More Price(6)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 388386 4,4′-Methylenebis(cyclohexyl isocyanate), mixture of isomers 90% 5124-30-1 100ml $44.6 2018-11-13 Buy
Sigma-Aldrich 33490 HMDI analytical standard 5124-30-1 2ml-r $56.2 2018-11-13 Buy
TCI Chemical D2380 Dicyclohexylmethane 4,4'-Diisocyanate (mixture of isomers) >90.0%(GC) 5124-30-1 25g $17 2018-11-22 Buy
TCI Chemical D2380 Dicyclohexylmethane 4,4'-Diisocyanate (mixture of isomers) >90.0%(GC) 5124-30-1 100g $25 2018-11-22 Buy
Sigma-Aldrich 388386 4,4′-Methylenebis(cyclohexyl isocyanate), mixture of isomers 90% 5124-30-1 500ml $101 2018-11-13 Buy

Methylene-bis(4-cyclohexylisocyanate) Chemical Properties,Uses,Production

Chemical Properties

Liquid.Soluble in acetone;reacts with water or ethanol.

Chemical Properties

DMDI is a clear, colorless to light-yellow liquid.


Methylene bis(4-cyclohexylisocyanate) isused to produce urethane foam with colorstability.


HMDI has excellent light stability and the stability of the six membered ring structure, has excellent weather resistance and excellent mechanical properties of polyurethane material, and is especially suitable for the production of high performance elastic body, a water polyurethane resin and UV resin.


ChEBI: A diisocyanate consisting of dicyclohexylmethane with two isocyanate groups at the 4- and 4'-positions.

General Description

Clear colorless to light-yellow liquid.

Air & Water Reactions

Reacts with water to form CO2

Reactivity Profile

Isocyanates and thioisocyanates, such as Methylene-bis(4-cyclohexylisocyanate), are incompatible with many classes of compounds, reacting exothermically to release toxic gases. Reactions with amines, aldehydes, alcohols, alkali metals, ketones, mercaptans, strong oxidizers, hydrides, phenols, and peroxides can cause vigorous releases of heat. Acids and bases initiate polymerization reactions in these materials. Some isocyanates react with water to form amines and liberate carbon dioxide. Base-catalysed reactions of isocyanates with alcohols should be carried out in inert solvents. Such reactions in the absence of solvents often occur with explosive violence, [Wischmeyer(1969)].


Strong skin and eye irritant. Respiratorysensitization and lower respiratory tract irritant.

Health Hazard

Studies on test animals indicate that methy-lene bis(4-cyclohexylisocyanate) is highlytoxic by an inhalation route and can causesevere skin reaction. Exposure to 20 ppmfor 5 hours produced irritation of the respiratory tract, tremor, convulsion, congestion oflungs, and edema in rats. The symptoms atlower levels were decreased as to respirationrate and pulmonary irritation.
Contact with the skin can produce severeirritation, erythema, and edema. The oraltoxicity of this compound is very low.
LD50 value, oral (rats): 9900 mg/kg
There is no report of the compound’smutagenicity or carcinogenicity.

Fire Hazard

Flash point data for Methylene-bis(4-cyclohexylisocyanate) are not available. Methylene-bis(4-cyclohexylisocyanate) is probably combustible.

Safety Profile

Poison by inhalation. Mildly toxic by ingestion. When heated to decomposition it emits very toxic fumes of NOx and CN-.

Potential Exposure

A potential danger to those involved in the manufacture of this compound or its use in the production of light-stable, nonyellowing polyurethane resins.

First aid

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit. Medical observation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy.


UN2206 Isocyanates, toxic, n.o.s. or Isocyanate solutions, toxic, n.o.s., flash point .61C and boiling point ,300C, Hazard Class: 6.1; Labels: 6.1-Poisonous materials., Technical Name Required.


May form explosive mixture with air. Isocyanates are highly flammable and reactive with many compounds, even with themselves. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Reaction with moist air, water or alcohols may form amines and insoluble polyureas and react exothermically, releasing toxic, corrosive or flammable gases, including carbon dioxide; and, at the same time, may generate a violent release of heat increasing the concentration of fumes in the air. Incompatible with amines, aldehydes, alkali metals, ammonia, carboxylic acids, caprolactum, alkaline materials, glycols, ketones, mercaptans, hydrides, organotin catalysts, phenols, strong acids, strong bases, strong reducing agents such as hydrides, urethanes, ureas. Elevated temperatures or contact with acids, bases, tertiary amines, and acylchlorides may cause explosive polymerization. Attacks some plastics, rubber and coatings. Contact with metals may evolve flammable hydrogen gas. May accumulate static electrical charges, and may cause ignition of its vapors. May slowly polymerize if heated above 122F/50C. Contact with metals may evolve flammable hydrogen gas.

Waste Disposal

Methylene bis(4-cyclohexylisocyanate) isdissolved in acetone or any other combustible solvent and burned in a chemicalincinerator equipped with an afterburner andscrubber.

Methylene-bis(4-cyclohexylisocyanate) Preparation Products And Raw materials

Raw materials

Preparation Products

Methylene-bis(4-cyclohexylisocyanate) Suppliers

Global( 64)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32457 55
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 24001 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40277 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30168 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 / 800-988-0390
021-67121385 China 24560 81
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44046 61
Nanjing Chemlin Chemical Co., Ltd 025-83697070
+86-25-83453306 China 19982 64
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202,021-54308259
+86-21-54291107 China 43266 64
BEST-REAGENT 400-1166-196 18981987031
028-84555506 QQ:800101999 China 9806 57

5124-30-1(Methylene-bis(4-cyclohexylisocyanate))Related Search:

Copyright 2017 © ChemicalBook. All rights reserved