4,4'-methylenediphenyl diisocyanate SDS
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifier
- Product name： 4,4'-methylenediphenyl diisocyanate
- CAS： 101-68-8
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses： For R&D use only. Not for medicinal, household or other use.
- Uses advised against： none
Company Identification
- Company：Chemicalbook.in
- Address：5 vasavi Layout Basaveswara Nilayam Pragathi Nagar Hyderabad, India -500090
- Telephone：+91 9550333722
SECTION 2: Hazards identification
Classification of the substance or mixture
Skin irritation, Category 2
Eye irritation, Category 2
Skin sensitization, Category 1
Acute toxicity - Category 4, Inhalation
Specific target organ toxicity – single exposure, Category 3
Respiratory sensitization, Category 1
Carcinogenicity, Category 2
Specific target organ toxicity – repeated exposure, Category 2
GHS label elements, including precautionary statements
-
Pictogram(s)
- Signal word Danger
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H332 Harmful if inhaled
H335 May cause respiratory irritation
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
H351 Suspected of causing cancer
H373 May cause damage to organs through prolonged or repeated exposure
P264 Wash ... thoroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P272 Contaminated work clothing should not be allowed out of the workplace.
P271 Use only outdoors or in a well-ventilated area.
P284 [In case of inadequate ventilation] wear respiratory protection.
P203 Obtain, read and follow all safety instructions before use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P302+P352 IF ON SKIN: Wash with plenty of water/...
P321 Specific treatment (see ... on this label).
P332+P317 If skin irritation occurs: Get medical help.
P362+P364 Take off contaminated clothing and wash it before reuse.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P333+P317 If skin irritation or rash occurs: Get medical help.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317 Get medical help.
P319 Get medical help if you feel unwell.
P342+P316 If experiencing respiratory symptoms: Get emergency medical help immediately.
P318 IF exposed or concerned, get medical advice.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
SECTION 3: Composition/information on ingredients
Substance
- Chemical name: 4,4'-methylenediphenyl diisocyanate
- Common names and synonyms: 4,4'-methylenediphenyl diisocyanate
- CAS number: 101-68-8
- EC number: 202-966-0
- Concentration: 100%
SECTION 4: First aid measures
Description of necessary first-aid measures
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Rinse mouth. Do NOT induce vomiting. Refer for medical attention .
Most important symptoms/effects, acute and delayed
Breathlessness, chest discomfort, and reduced pulmonary function. (USCG, 1999)
Indication of immediate medical attention and special treatment needed, if necessary
Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. Isocyanates, aliphatic thiocyanates, and related compounds
SECTION 5: Firefighting measures
Suitable extinguishing media
Carbon dioxide or dry chemical.
Specific hazards arising from the chemical
Special Hazards of Combustion Products: Toxic vapors are generated when heated. Behavior in Fire: Solid melts and burns (USCG, 1999)
Special protective actions for fire-fighters
Use powder, carbon dioxide.
SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
Evacuate danger area! Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Sweep spilled substance into covered sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations.
Environmental precautions
Evacuate danger area! Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Sweep spilled substance into covered sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations.
Methods and materials for containment and cleaning up
Ventilate area of spill or leak. for small quantities, absorb on paper towels. ... burn the paper in suitable location away from combustible materials. large quantities can be collected & atomized in suitable combustion chamber equipped with appropriate effluent gas cleaning device. disposal methods: 1. by absorbing on vermiculite, dry sand, earth or a similar material & disposing in a secured sanitary landfill. 2. by atomizing in suitable combustion chamber equipped with appropriate effluent gas cleaning device.
SECTION 7: Handling and storage
Precautions for safe handling
NO open flames. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Separated from food and feedstuffs and incompatible materials. See Chemical Dangers. Cool. Dry. Keep in the dark.Isocyanates are transported in railroad tank cars, tank trucks, tanks in ships, containers, and drums. They are stored in steel tanks and processed in steel equipment. For long-term storage stainless steel is recommended. To avoid contamination by atmospheric moisture, a dry air or inert gas blanket is essential. Isocyanates
SECTION 8: Exposure controls/personal protection
Control parameters
TLV: 0.005 ppm as TWA.MAK: (inhalable fraction): 0.05 mg/m3; peak limitation category: I(1); skin absorption (H); sensitization of respiratory tract and skin (SAH); carcinogen category: 4; pregnancy risk group: C
no data available
Appropriate engineering controls
Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the risk-elimination area.
Individual protection measures, such as personal protective equipment (PPE)
Wear safety goggles or face shield.
Protective gloves. Protective clothing.
Use local exhaust or breathing protection.
no data available
SECTION 9: Physical and chemical properties and safety characteristics
-
Physical state：
Solid. Crystalline.
-
Colour：
White.
-
Odour：
Odorless
-
Melting point/freezing point：
39 - 43 °C.
-
Boiling point or initial boiling point and boiling range：
> 300 °C. Atm. press.:1 013 hPa.
-
Flammability：
Combustible Solid
-
Lower and upper explosion limit/flammability limit：
no data available
-
Flash point：
211 °C. Atm. press.:1 000 hPa.
-
Auto-ignition temperature：
> 601 °C. Atm. press.:Ca. 1 013 hPa.
-
Decomposition temperature：
no data available
-
pH：
no data available
-
Kinematic viscosity：
no data available
-
Solubility：
Insoluble (NTP, 1992)
-
Partition coefficient n-octanol/water：
log Pow = 4.51. Temperature:22 °C.
-
Vapour pressure：
< 0.002 Pa. Temperature:20 °C.
-
Density and/or relative density：
1.32. Temperature:20 °C.;1.18 g/cm3. Temperature:50 °C.
-
Relative vapour density：
(air = 1): 8.6
-
Particle characteristics：
no data available
SECTION 10: Stability and reactivity
Reactivity
The substance may polymerize under the influence of temperatures above 204°C. On combustion, forms toxic and corrosive fumes including nitrogen oxides and hydrogen cyanide (see ICSC 0492). Reacts readily with water. This produces insoluble polyureas. Reacts violently with acids, alcohols, amines, bases and oxidants. This generates fire and explosion hazard.
Chemical stability
no data available
Possibility of hazardous reactions
A flammable liquid.Isocyanates and thioisocyanates, such as DIPHENYLMETHANE-4,4'-DIISOCYANATE, 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)].
Conditions to avoid
no data available
Incompatible materials
Strong alkalis, acids, alcohol [Note: Polymerizes at 450 degrees F].
Hazardous decomposition products
When heated to decomposition it emits toxic fumes of /nitrogen oxides and sulfur oxides/.
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 - rat (male/female) - > 2 000 mg/kg bw.
- Inhalation: LC50 - rat (male/female) - 0.49 mg/L air (analytical).
- Dermal: LD50 - rabbit (male/female) - > 9 400 mg/kg bw.
Skin corrosion/irritation
no data available
Serious eye damage/irritation
no data available
Respiratory or skin sensitization
no data available
Germ cell mutagenicity
no data available
Carcinogenicity
Evaluation: There is inadequate evidence for the carcinogenicity of 4,4'-methylenediphenyl diisocyanate or polymeric 4,4'-methylenediphenyl diisocyanate in humans. There is limited evidence in experimental animals for the carcinogenicity of a mixture containing monomeric and polymeric 4,4'-methylenediphenyl diisocyanate. Overall evaluation: 4,4'-Methylenediphenyl diisocyanate (industrial preparation) is not classifiable as to its carcinogenicity in humans (Group 3).
Reproductive toxicity
No information is available on the reproductive or developmental effects of MDI in humans. Decreased placental and fetal weights and an increased number of fetuses per litter with skeletal variations were reported in one inhalation study in rats. These effects were observed only at the highest dose, and may have been related to maternal toxicity.
STOT-single exposure
Lachrymation. The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the lungs. This may result in impaired functions.
STOT-repeated exposure
Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation may cause asthma. See Notes.
Aspiration hazard
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.
SECTION 12: Ecological information
Toxicity
- Toxicity to fish: LC0 - Oryzias latipes - > 3 000 mg/L - 48 h.
- Toxicity to daphnia and other aquatic invertebrates: EC50 - Daphnia magna - 129.7 mg/L - 24 h.
- Toxicity to algae: NOELR - Desmodesmus subspicatus (previous name: Scenedesmus subspicatus) - 1 640 mg/L - 3 d.
- Toxicity to microorganisms: EC50 - activated sludge - > 100 mg/L - 3 h. Remarks:Respiration rate.
Persistence and degradability
no data available
Bioaccumulative potential
4,4'-Methylenediphenyl diisocyanate hydrolyzes rapidly in aqueous solution(1-3); therefore, bioconcentration will not be an important environmental fate process(SRC). Exposure of carp to 0.00001% concentrations of 4,4'-methylenediphenyl diisocyanate for an eight week period resulted in no bioaccumulations(4).
Mobility in soil
4,4'-Methylenediphenyl diisocyanate hydrolyzes rapidly in aqueous solution(1-3); therefore, leaching and adsorption to moist soil and sediment will not be an important environmental fate process(SRC).
Other adverse effects
no data available
SECTION 13: Disposal considerations
Disposal methods
The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.
Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.
SECTION 14: Transport information
UN Number
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
UN Proper Shipping Name
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
Transport hazard class(es)
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
Packing group, if applicable
ADR/RID: Not dangerous goods. (For reference only, please check.)
IMDG: Not dangerous goods. (For reference only, please check.)
IATA: Not dangerous goods. (For reference only, please check.)
Environmental hazards
ADR/RID: No
IMDG: No
IATA: No
Special precautions for user
no data available
Transport in bulk according to IMO instruments
no data available
SECTION 15: Regulatory information
Safety, health and environmental regulations specific for the product in question
SECTION 16: Other information
Abbreviations and acronyms
- CAS: Chemical Abstracts Service
- ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
- RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
- IMDG: International Maritime Dangerous Goods
- IATA: International Air Transportation Association
- TWA: Time Weighted Average
- STEL: Short term exposure limit
- LC50: Lethal Concentration 50%
- LD50: Lethal Dose 50%
- EC50: Effective Concentration 50%
References
- IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
- HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
- IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
- eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
- CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
- ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
- ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
- Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
- ECHA - European Chemicals Agency, website: https://echa.europa.eu/
Other Information
The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort.Rest and medical observation are therefore essential.Anyone who has shown symptoms of asthma due to this substance should avoid all further contact with this substance.MDI may sensitize workers so that they react to other isocyanates (asthma).Do NOT take working clothes home.