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584-84-9

Tolylene-2,4-diisocyanate

CAS: 584-84-9

Molecular Formula: C9H6N2O2

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584-84-9 - Names and Identifiers

Name Tolylene-2,4-diisocyanate
Synonyms TDI
2,4-TDI
BASF LUPRANATE T80
Tolyelenediisocyanate
2,4-DIISOCYANATOTOLUENE
2,4-TOLUENEDIISOCYANATE
Toluene-2,4-diisocyanate
2,4-Toluylene Diisocyana
CRESORCINOL DIISOCYANATE
Toluene 2,4-diisocyanate
Tolylene-2,4-diisocyanate
2,4-Tolylene diisocyanate
1,3-Diisocyanato-4-Methylbenzene
4-Methyl-m-phenylene diisocyanate
Tolylene 2,4-Diisocyanate(monomer)
4-METHYL-1,3-PHENYLENE DIISOCYANATE
1-METHYL-1,3-PHENYLENE DIISOCYANATE
4-Methyl-m-phenylene DiisocyanateToluene-2,4-diisocyanate4-Methyl-1,3-phenylene Diisocyanate2,4-Diisocyanatotoluene
CAS 584-84-9
EINECS 209-544-5
InChI InChI=1/C9H8N2O2/c1-9(11-7-13)4-2-8(3-5-9)10-6-12/h2-5,8H,1H3
InChIKey DVKJHBMWWAPEIU-UHFFFAOYSA-N

584-84-9 - Physico-chemical Properties

Molecular FormulaC9H6N2O2
Molar Mass174.16
Density1.225g/mLat 25°C
Melting Point20-22°C(lit.)
Boling Point124-126°C18mm Hg(lit.)
Flash Point250°F
Water Solubilityreacts
Solubility Miscible with ether, acetone, benzene, carbontetrachloride and chlorobenzene.
Vapor Presure0.03 mm Hg ( 25 °C)
Vapor Density6 (vs air)
AppearanceLiquid
Specific Gravity1.225
ColorColorless
OdorSharp, pungent odor detectable at 0.02 to 0.4 ppm
Exposure LimitTLV-TWA 0.0355 mg/m3 (0.005 ppm)(ACGIH and NIOSH); STEL or ceiling/10min 0.142 mg/m3 (0.02 ppm) (ACGIH,NIOSH, and OSHA); IDLH 71 mg/m3(10 ppm) (NIOSH).
Merck14,9530
BRN744602
Storage Condition2-8°C
StabilityStable, but decomposes in the presence of moisture. Also heat and light sensitive. Readily polymerizes in contact with base. Reacts with compounds containing active hydrogen.
SensitiveMoisture Sensitive
Explosive Limit9.5%
Refractive Indexn20/D 1.568(lit.)
Physical and Chemical Properties
bp (°C):
115- 120(p=10 torr)
115- 120(p=10 torr)
mp (°C):
12.5- 13.5
12.5- 13.5
density:
1.22
nd:
1.567- 1.569

584-84-9 - Risk and Safety

Hazard SymbolsT+ - Very toxic
Very toxic
Risk CodesR26 - Very Toxic by inhalation
R36/37/38 - Irritating to eyes, respiratory system and skin.
R40 - Limited evidence of a carcinogenic effect
R42/43 - May cause sensitization by inhalation and skin contact.
R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
Safety DescriptionS23 - Do not breathe vapour.
S36/37 - Wear suitable protective clothing and gloves.
S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. 
UN IDsUN 2078 6.1/PG 2
WGK Germany2
RTECSCZ6300000
FLUKA BRAND F CODES10-21
TSCAYes
HS Code29291010
Hazard Class6.1
Packing GroupII
ToxicityAcute oral LD50 for rats 5,800 mg/kg, wild birds 100 mg/kg (quoted, RTECS, 1985).

584-84-9 - Nature

Open Data Verified Data

colorless transparent or light yellow flammable liquid. There is a strong irritating odor. Boiling point 247 °c. Melting point 19. 5~21.5 °c. Flash point 127 °c. The relative density was 1. 217. With ethanol (decomposition), diethylene glycol ether, ether, acetone, carbon tetrachloride, benzene, chlorobenzene, kerosene, olive oil miscible. It reacts with water to produce carbon dioxide, which can react with compounds containing active hydrogen.

Last Update：2024-01-02 23:10:35

584-84-9 - Preparation Method

Open Data Verified Data

first, molten 2, 4-aminotoluene is dissolved in chlorobenzene and reacted with phosgene at a low temperature of 35 to 45 ° C., and then reacted with phosgene at a high temperature of 130 ° C. Or lower. After completion of the reaction, the hydrogen chloride and the remaining phosgene were driven out with nitrogen, Chlorobenzene was distilled out, and finally vacuum distillation was performed to obtain the finished product. Can also be nitrotoluene by nitration, reduction, 2,4 A Two amino toluene, and then by phosgenation to obtain the finished product. For other new methods, see phenyl isocyanate (C351).

Last Update：2022-01-01 10:55:06

584-84-9 - Use

Open Data Verified Data

A linear polyurethane (polyurethane) resin is formed by reacting with a diol. Can be used for the preparation of synthetic fibers, foam plastics, rubber, coatings and adhesives. The dimer is a vulcanizing agent for the kneaded polyurethane rubber. In addition to being used alone, a mixture of 80:20 and 65:35 with 2, 6-toluene diisocyanate can also be used for the production of rigid and flexible polyurethane foams and the like.

Last Update：2022-01-01 10:55:05

584-84-9 - Safety

Open Data Verified Data

highly toxic. Has a strong stimulating effect on the skin, eyes and mucous membranes. Long-term exposure can cause bronchitis, a few cases of asthma, bronchiectasis and even pulmonary heart disease. Rats at the concentration of (0.5~1) x 10 -6, inhalation 6 hours a day, inhalation 5~10 days, can be lethal. After the human body inhaled 0.0005mg/L, the occurrence of severe Cough, shortness of breath. The highest wind device in the air. The operator should wear protective equipment. Using galvanized iron drum packaging, net weight per barrel 35kg. Store in a ventilated, dry place. Packaging should be sealed to avoid moisture absorption. Hazardous materials shall be stored and transported according to regulations.

Last Update：2022-01-01 10:55:07

584-84-9 - Reference Information

LogP3.43 at 22℃
NIST chemical information Information provided by: webbook.nist.gov (external link)
EPA chemical information Information provided by: ofmpub.epa.gov (external link)
uses mainly used in polyurethane products, including foam, polyurethane coatings, polyurethane rubber; polyimide fibers and adhesives also have some applications.
Used for the synthesis of fiber, foam and rubber, and also used as an adhesive
production method dinitrotoluene is generated by nitration of toluene, and then toluene diamine is obtained by reduction. TDI (mainly 2,4-isomer) is obtained by the reaction of toluenediamine and phosgene.
category toxic substances
toxicity classification highly toxic
acute toxicity inhalation-rat LC50: 98 mg/m3/4 h; Inhalation-mouse LC50: 70 mg/m3/4 h
stimulation data skin-rabbit 500 mg/24 hours moderate; Eye-rabbit 100 mg severe
explosive hazard characteristics blastable when mixed with air
flammability hazard characteristics open flame is combustible; high heat decomposes toxic nitrogen oxide gas
storage and transportation characteristics warehouse ventilation and low temperature drying; Store separately from oxidants, food additives, acids and alkalis
fire extinguishing agent foam, mist water, carbon dioxide, sand, dry powder. Disable acid-base fire extinguishing agent.
occupational standard TLV-TWA 0.005 PPM(0.036 mg/m3); STEL 0.02 PPM (0.14 mg/m3); CL 0.02PPM (0.14 mg/m3)
spontaneous combustion temperature >619°C
toxic substance data information provided by: pubchem.ncbi.nlm.nih.gov (external link)
immediate life-threatening and health concentration 2.5 ppm
Last Update：2024-04-09 19:05:09
584-84-9
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Product Name: Tolylene-2,4-diisocyanate Request for quotation
CAS: 584-84-9
Tel: +86-17551318830
Email: r@reformchem.com­
Mobile: +86-17551318830
QQ: 3785839865 Click to send a QQ messageSend QQ message
Jiangsu Pules Biotechnology Co.,Ltd.
Spot supply
Product Name: Tolylene-2,4-diisocyanate Request for quotation
CAS: 584-84-9
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Wechat: 17505222756
Hefei TNJ Chemical Industry Co.,Ltd.
Product Name: Tolylene-2,4-diisocyanate Request for quotation
CAS: 584-84-9
Tel: 0086-551-65418684
Email: sales@tnjchem.com
　　　　 info@tnjchem.com
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