| Identification | More | [Name]
1,6-Diisocyanatohexane | [CAS]
822-06-0 | [Synonyms]
1，6-Diisocyantohexane
1,6-HEXAMETHYLENE DIISOCYANATE
Hexamethylene-1,6-diisocyanate
HEXAMETHYLENE DIISOCYANATE
1,6-diisocyanated’hexamethylene
1,6-diisocyanato-hexan
1,6-hexanedioldiisocyanate
1,6-Hexylene diisocyanate
1,6-hexylenediisocyanate
desmodurh
desmodurn
hexamethylendiisokyanat
Hexane 1,6-diisocyanate
Hexane, 1,6-diisocyanato-
hexane,1,6-diisocyanato-
hexane-1,6-diisocyanate
hexane1,6-diisocyanate
Isocyanic acid, diester with 1,6-hexanediol
Isocyanic acid, hexamethylene ester
isocyanicacid,diesterwith1,6-hexanediol | [EINECS(EC#)]
212-485-8 | [Molecular Formula]
C8H12N2O2 | [MDL Number]
MFCD00002047 | [Molecular Weight]
168.19 | [MOL File]
822-06-0.mol |
| Chemical Properties | Back Directory | [Appearance]
Hexamethylene diisocyanate is a colorless
liquid. Sharp, irritating odor. | [Melting point ]
-55°C | [Boiling point ]
82-85 °C0.1 mm Hg
| [density ]
1.047 g/mL at 20 °C(lit.)
| [vapor pressure ]
0.05 mm Hg ( 25 °C)
| [refractive index ]
n20/D 1.453
| [Fp ]
248 °F
| [storage temp. ]
2-8°C | [form ]
Liquid | [color ]
Clear colorless to slightly yellow | [Specific Gravity]
1.05 | [Stability:]
Stable. Moisture sensitive. Combustible. Incompatible with strong oxidizing agents, strong bases, amines, acids. May react explosively with alcohols in the presence of base without a diluting solvent. Heating above 200 C may cause polymerization. | [explosive limit]
0.9-9.5%(V) | [Water Solubility ]
Reacts | [Sensitive ]
Moisture Sensitive | [BRN ]
956709 | [Exposure limits]
TLV-TWA 0.0343 mg/m3 (0.005 ppm)
(ACGIH). | [Contact allergens]
This diisocyanate compound is used in the manufac ture of various polyurethane products: elastic and
rigid foams, paints, lacquers, adhesives, binding
agents, synthetics rubbers, and elastomer fibers. | [InChIKey]
RRAMGCGOFNQTLD-UHFFFAOYSA-N | [LogP]
3.2 at 20℃ | [Uses]
Chemical intermediate. | [CAS DataBase Reference]
822-06-0(CAS DataBase Reference) | [NIST Chemistry Reference]
1,6-Hexamethylene diisocyanate(822-06-0) | [EPA Substance Registry System]
822-06-0(EPA Substance) |
| Hazard Information | Back Directory | [Chemical Properties]
colourless liquid | [Definition]
ChEBI: A diisocyanate compound with the two isocyanates linked by a hexane-1,6-diyl group. | [General Description]
A colorless crystalline solid. Toxic by ingestion and is strongly irritating to skin and eyes. HEXAMETHYLENE DIISOCYANATE(822-06-0) is used to make nylon. | [Reactivity Profile]
HEXAMETHYLENE DIISOCYANATE reacts with water. Base-catalyzed reactions of this compound with alcohols may be explosively violent in the absence of diluting solvents. This chemical is incompatible with strong bases, amines, acids and strong oxidizers. HEXAMETHYLENE DIISOCYANATE is also incompatible with metal compounds and surface active materials. . | [Air & Water Reactions]
Contact with moisture or temperatures over 399°F may cause polymerization. Soluble in water. | [Hazard]
Combustible. | [Health Hazard]
TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death. Contact with molten substance may cause severe burns to skin and eyes. Reaction with water or moist air will release toxic, corrosive or flammable gases. Reaction with water may generate much heat that will increase the concentration of fumes in the air. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. | [Potential Exposure]
Used to make other chemicals, coat ings, and polyurethane. It is also used as a hardener in
automobile and airplane paints. | [Fire Hazard]
Combustible material: may burn but does not ignite readily. Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water. | [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, includ ing 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 medi cal 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. | [Shipping]
UN2281 Hexamethylene diisocyanate, Hazard
Class: 6.1; Labels: 6.1-Poisonous materials. | [Incompatibilities]
May form explosive mixture with air.
Isocyanates are highly flammable and reactive with many
compounds, even with themselves. Incompatible with oxi dizers (chlorates, nitrates, peroxides, permanganates, per chlorates, 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 flamma ble gases, including carbon dioxide; and, at the same time,
may generate a violent release of heat increasing the con centration of fumes in the air. Incompatible with amines,
aldehydes, alkali metals, ammonia, carboxylic acids, capro lactum, 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 acyl-chlorides 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. Temperatures above 200℃ can cause
polymerization. Attacks copper. | [Description]
This diisocyanate compound is used in the manufacture
of various polyurethane products: elastic and rigid
foams, paints, lacquers, adhesives, bin ding agents,
synthetic rubbers, and elastomeric fibers.
| [Application]
Hexamethylene diisocyanate is an aliphatic diisocyanate monomer typically used to produce oligomers and prepolymers that when combined with a polyol produce light-stable polyurethane.
Highly reactive 1,6-hexamethylene diisocyanate (HMDI) was used to synthesize lactic acid polymers from oligomers by the addition of 2,2′-bis(2-oxazoline) (BOX) as chain extenders. Self-healing ability was rendered to polyurethane elastomer by synthesizing alkoxyamine-based diol and reacting it with tri-functional homopolymer of HMDI and polyethylene glycol (PEG). Plastic optical fiber (POF) was prepared by the bulk homopolymerization of HMDI catalyzed by Tin(II)-2 ethylhexanoate (SnOct). | [Preparation]
Hexamethylene diisocyanate (HDI) is prepared by the phosgenation of hexamethylenediamine (section lO.2.2(b)):
H2N-(CH2)6-NH2--COCl2-->OCN-(CH2)6-NCO
Hexamethylene diisocyanate is a liquid with a volatility of the same order as that of tolylene diisocyanate. It is respiratory irritant and also has powerful effects on the skin and eyes. Hexamethylene diisocyanate was one of the first diisocyanates utilized for making polyurethanes, being used to prepare fibres and moulding compounds. These applications are no longer of importance but hexamethylene diisocyanate now finds use mainly in coatings which are more light stable than those based on aromatic isocyanates. | [Flammability and Explosibility]
Notclassified | [Environmental Fate]
HDI is not readily soluble (low mg l-1 range) in water.
However, upon contact with water, reactivity is rapid with
a half-life of 0.23 h at 23 ℃. This nonhomogeneous reaction is
expected to produce principally polyureas. In the occupational
environment, an aerosol can be formed by nebulization;
however, with a vapor pressure of 0.007 hPa, HDI is expected
to exist in the ambient atmosphere in its vapor state. As a vapor,
HDI is expected to degrade in the atmosphere by reaction with
hydroxyl radicals (half-life approximately 2 days). In direct
contact with water, its rapid hydrolysis reduces the likelihood
for HDI to bioaccumulate in the aquatic compartment or
transfer to groundwater. Therefore, the rapid hydrolysis in an
aquatic environment and relatively rapid degradation in
atmosphere limits the ability of this substance to be bioaccumulative
or persistent. | [storage]
Color Code- Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with thischemical you should be trained on its proper handling andstorage. Before entering confined space where this chemicalmay be present, check to make sure that an explosive con-centration doesnot exist. Hexamethylene diisocyanateshould be stored away from moisture or water. This contactwill causeit to polymerize? andIexplode its container.Hexamethylene diiso-cyanate must be stored to avoid con-tact with amines, carboxylic acids, strong bases, and alco-hols since violent reactions occur. Store in tightly closedcontainers in a cool, well-ventilated area at temperaturesbelow 93℃/200°F. | [Toxicity evaluation]
Toxicity predominantly results from direct interaction of HDI
with tissues or macromolecules at the portal of entry. HDI
reacts with biologic macromolecules containing nucleophilic
–NH, –SH, –OH, or –COOH groups, and these interactions
are thought to account for acute irritation to skin and mucus
membranes, sensory irritation, and dermal sensitization. Less
clear is the etiology of HDI-induced occupational asthma. A
number of mechanisms, including immunologic, neurologic,
and pharmacologic, have been postulated without a clear
resolution. Overall, these mechanisms account for the principal
effects associated with HDI that lead to toxicity at the
portal of entry with no evidence of primary systemic organ
toxicity. | [Waste Disposal]
Disposal is by chemical incineration of HDIsolution in a combustible solvent. |
| Safety Data | Back Directory | [Hazard Codes ]
T | [Risk Statements ]
R23:Toxic by inhalation.
R36/37/38:Irritating to eyes, respiratory system and skin .
R42/43:May cause sensitization by inhalation and skin contact . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S38:In case of insufficient ventilation, wear suitable respiratory equipment .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . | [RIDADR ]
UN 2281 6.1/PG 2
| [WGK Germany ]
1
| [RTECS ]
MO1740000
| [F ]
10-19-21 | [Autoignition Temperature]
454 °C | [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
II | [HS Code ]
29291090 | [Safety Profile]
Poison by inhalation
and intravenous routes. Moderately toxic by
ingestion and skin contact. Potentially
explosive reaction with alcohols + base.
When heated to decomposition it emits
toxic fumes of NOx. See also CYANATES. | [Hazardous Substances Data]
822-06-0(Hazardous Substances Data) | [Toxicity]
LD50 orally in Rabbit: 746 mg/kg LD50 dermal Rabbit 570 mg/kg |
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