1,5-diisocyanatonaphthalene
1,5-Naphthalene Diisocyanate
CAS: 3173-72-6
Molecular Formula: C12H6N2O2
1,5-diisocyanatonaphthalene - Names and Identifiers
| Name | 1,5-Naphthalene Diisocyanate |
| Synonyms | NDI 1,5-NDI NAPHTHYLENEDIISOCYANATE Naphthyl 1,5-diisocyanate 1,5-diisocyanatonaphthalene 1,5-diisocyanato-naphthalen 1,5-DIISOCYANATONAPHTHALENE 1,5-NAPHTHALENEDIISOCYANATE 1,5-Naphthylene diisocyanate 1,5-NAPHTHYLENE DIISOCYANATE 1,5-Naphthalene Diisocyanate NAPHTHALENE 1,5-DIISOCYANATE Naphthalene, 1,5-diisocyanato- ISOCYANICACID,1,5-NAPHTHALENEESTER 1,5-Naphthalenediisocyanate -Carc. |
| CAS | 3173-72-6 |
| EINECS | 221-641-4 |
| InChI | InChI=1/C12H6N2O2/c15-7-13-11-5-1-3-9-10(11)4-2-6-12(9)14-8-16/h1-6H |
| InChIKey | SBJCUZQNHOLYMD-UHFFFAOYSA-N |
1,5-diisocyanatonaphthalene - Physico-chemical Properties
| Molecular Formula | C12H6N2O2 |
| Molar Mass | 210.19 |
| Density | 1.45 |
| Melting Point | 130°C |
| Boling Point | 244°C (100 torr) |
| Flash Point | 128.6°C |
| Water Solubility | soluable |
| Vapor Presure | 0.001Pa at 25℃ |
| Appearance | white to yellowish crystalline flakes |
| Color | White to Light yellow |
| Storage Condition | Inert atmosphere,2-8°C |
| Refractive Index | 1.6000 (estimate) |
| Use | Used as pesticide, pharmaceutical intermediates |
1,5-diisocyanatonaphthalene - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R20 - Harmful by inhalation R36/37/38 - Irritating to eyes, respiratory system and skin. R42 - May cause sensitization by inhalation R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R37 - Irritating to the respiratory system R26 - Very Toxic by inhalation R36/38 - Irritating to eyes and skin. |
| Safety Description | 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 soap-suds. 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 the label whenever possible.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S42 - During fumigation / spraying wear suitable respiratory equipment. S36 - Wear suitable protective clothing. S51 - Use only in well ventilated areas. S22 - Do not breathe dust. |
| UN IDs | 2206 |
| RTECS | NQ9600000 |
| HS Code | 29291090 |
| Hazard Class | 6.1(b) |
| Packing Group | III |
1,5-diisocyanatonaphthalene - Nature
Open Data Verified Data
light yellow crystalline flakes. Melting point 126.5~127 ℃, boiling point 167 ℃ ( 667Pa),183 ℃(1. 33kPa), relative density 1.42 (20 ℃), flash point 155 ℃. This product is toxic.
Last Update：2024-01-02 23:10:35
1,5-diisocyanatonaphthalene - Preparation Method
Open Data Verified Data
- Phosgene Method
- one-step carbonylation
- two-step carbonylation
- dimethyl carbonate method
Last Update：2022-01-01 10:55:11
1,5-diisocyanatonaphthalene - Use
Open Data Verified Data
This product is a raw material for the synthesis of advanced polyurethane, and can also be used for the synthesis of coatings, adhesives, etc.
Last Update：2022-01-01 10:55:11
1,5-diisocyanatonaphthalene - Safety
Open Data Verified Data
LD50 was 15000mg/kg. Dust is hazardous. Production Workshop should have good ventilation facilities, strict and safe operation. Workers must wear rubber protective gloves, eye masks, and protective jackets when operating. Clean the ground with concentrated ammonia, ethanol and water.
Last Update：2022-01-01 10:55:11
1,5-diisocyanatonaphthalene - Reference Information
| LogP | 0.91 at 25℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| (IARC) carcinogen classification | 3 (Vol. 19, Sup 7, 71) 1999 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| overview | 1,5-naphthalene diisocyanate (l,5-naphthalene diisocyanate, NDI for short) is a class of polyurethane (PU) synthesized from diisocyanate components. Compared with MDI and TDI, NDI has higher melting point, higher molecular rigidity, regularity and symmetry, which can fundamentally improve the phase separation degree of polyurethane and make NDI-based polyurethane obtain more excellent mechanical and physical properties. NDI-based polyurethane has the characteristics of high wear resistance, high heat resistance, corrosion resistance and excellent dynamic performance. It is mainly used in high dynamic load and heat resistance occasions. |
| appearance | white to light yellow flake crystalline solid. |
| product characteristics | NDI(1, 5-naphthalene diisocyanate) is a raw material for advanced polyurethane, which can be used to make polyurethane elastomers with high elasticity and high hardness. NDI polyurethane elastomer has very excellent performance, it has any other kinds of polyurethane elastomer incomparable performance, such as excellent dynamic performance, extremely high mechanical properties, outstanding cutting resistance, wear resistance and temperature resistance and so on. Therefore, NDI polyurethane elastomers are widely used in automobile shock absorbers, forklift bearing wheels, printing and dyeing textile rubber rollers, rubber scrapers, bridge building buffer blocks, entertainment and leisure, military industry, etc. The cast elastomer made of NDI has excellent dynamic characteristics and wear resistance, and has small damping, high resilience and less internal heat generation, which can be applied to high dynamic load and heat resistance occasions. Molded products made of NDI have high tear strength, low abrasion, low compression set and excellent resilience. NDI-based microporous polyurethane elastomer products have low internal heat generation and small permanent deformation under dynamic load, and can maintain good rigidity. This special microporous polyurethane material is mainly used for automobile shock absorption and buffer parts. |
| Use | Used as pesticide and pharmaceutical intermediate |
| category | toxic substances |
| toxicity classification | highly toxic |
| acute toxicity | inhalation-mouse LC50: 270 mg/m3/4 h |
| flammability hazard characteristics | open flame is combustible; combustion releases toxic nitrogen oxide smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Separate storage and transportation from food, oxidant and acid |
| fire extinguishing agent | mist water, foam, dry powder, carbon dioxide, sand |
| occupational standard | TWA 0.04 mg/m3 |
Last Update：2024-04-10 22:29:15
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