1,5-Naphthalene diisocyanate
- Product Name
- 1,5-Naphthalene diisocyanate
- CAS No.
- 3173-72-6
- Chemical Name
- 1,5-Naphthalene diisocyanate
- Synonyms
- ndi;1,5-DIISOCYANATONAPHTHALENE;1,5-NAPHTHYLENE DIISOCYANATE;Naphthylene-1,5-diisocyanate;1,5-NDI;40KGS/DRUM;desmodur15;1,5-naphthalene;1,5-Naphthalene diis;NAPHTHYLENEDIISOCYANATE
- CBNumber
- CB1715235
- Molecular Formula
- C12H6N2O2
- Formula Weight
- 210.19
- MOL File
- 3173-72-6.mol
1,5-Naphthalene diisocyanate Property
- Melting point:
- 130°C
- Boiling point:
- 244°C (100 torr)
- Density
- 1.45
- vapor pressure
- 0.001Pa at 25℃
- refractive index
- 1.6000 (estimate)
- storage temp.
- Inert atmosphere,2-8°C
- solubility
- Chloroform (Slightly), DMSO (Slightly)
- form
- powder to lump
- color
- White to Light yellow
- Water Solubility
- soluable
- Stability:
- Hygroscopic
- InChIKey
- SBJCUZQNHOLYMD-UHFFFAOYSA-N
- LogP
- 0.91 at 25℃
- CAS DataBase Reference
- 3173-72-6(CAS DataBase Reference)
- NIST Chemistry Reference
- Naphthalene, 1,5-diisocyanato-(3173-72-6)
- IARC
- 3 (Vol. 19, Sup 7, 71) 1999
- EPA Substance Registry System
- 1,5-Naphthalene diisocyanate (3173-72-6)
Safety
- Hazard Codes
- Xn
- Risk Statements
- 20-36/37/38-42-52/53-37-26-36/38
- Safety Statements
- 26-28-38-45-61-42-36-51-22
- RIDADR
- 2206
- RTECS
- NQ9600000
- HazardClass
- 6.1(b)
- PackingGroup
- III
- HS Code
- 29291090
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
H330Fatal if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation
H412Harmful to aquatic life with long lasting effects
- Precautionary statements
-
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P284Wear respiratory protection.
P403+P233Store in a well-ventilated place. Keep container tightly closed.
P405Store locked up.
P501Dispose of contents/container to..…
N-Bromosuccinimide Price
- Product number
- N0168
- Product name
- 1,5-Diisocyanatonaphthalene
- Purity
- >98.0%(GC)
- Packaging
- 25g
- Price
- $149
- Updated
- 2024/03/01
- Product number
- N0168
- Product name
- 1,5-Diisocyanatonaphthalene
- Purity
- >98.0%(GC)
- Packaging
- 100g
- Price
- $365
- Updated
- 2024/03/01
- Product number
- D679083
- Product name
- 1,5-Diisocyanatonaphthalene
- Packaging
- 250mg
- Price
- $50
- Updated
- 2021/12/16
- Product number
- H176
- Product name
- 1,5-Naphthylenediisocyanate
- Packaging
- 25g
- Price
- $103
- Updated
- 2021/12/16
- Product number
- JK326787
- Product name
- 1,5-Diisocyanatonaphthalene
- Purity
- 98%
- Packaging
- 25g
- Price
- $119
- Updated
- 2021/12/16
1,5-Naphthalene diisocyanate Chemical Properties,Usage,Production
Description
Naphthalene diisocyanate (NDI) occurs as white to lightyellow crystalline flakes with a characteristic odor. NDI is 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. NDI can react with water to form amines and liberate carbon dioxide.
Chemical Properties
Naphthylene 1,5-diisocyanate is a solid, m.p. 128°C. It has a lower vapour pressure than tolylene diisocyanate and is therefore less toxic in use; it does, however, have sensitizing properties.
Uses
Naphthylene 1,5-diisocyanate is mainly used for the production of elastomers.
Uses
Manufacture of polyurethane solid elastomers.
Uses
NDI is used as a curing agent in the manufacture of elastomers.
Definition
ChEBI: 1,5-Naphthalene diisocyanate is a member of naphthalenes.
Preparation
Naphthylene 1,5-diisocyanate (NDI) is prepared from naphthalene as follows:
General Description
White to light-yellow crystalline flakes.
Reactivity Profile
Isocyanates and thioisocyanates, such as 1,5-Naphthalene 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)].
Hazard
Irritant. Questionable carcinogen.
Flammability and Explosibility
Non flammable
Safety Profile
A powerful allergen. An irritant. Questionable carcinogen. When heated to decomposition it emits toxic fumes of NOx.
Environmental Fate
NDI is a synthetic organic chemical. It is a natural derivative of primary amines with the general formula R–N]C]O which does not occur naturally in the environment. At room temperature it can be a liquid or crystal. It is miscible with alcohol, diglycol, monoethyl ether, ether, acetone, carbon tetrachloride, benzene, chlorobenzene, kerosene, and olive oil; however, it may react violently with alcohol, water, acid, bases, and strong alkaline materials and tertiary amines and generate enough heat to self-ignite and release toxic combustion products. NDI is not readily biodegradable; however, it reacts with water and most acids producing unstable carbonic acids, which subsequently decarboxylate yielding relatively chemically inert and insoluble polymeric urea. While these polyureas are persistent, studies have indicated that they pose virtually no potential for adverse impacts on the aquatic environment. Due to hydrolysis in water, bioaccumulation of NDI is not expected. Since the hydrolysis products formed are irritants, there is a potential for inhalation exposure. The degree stability is a function of humidity.
Toxicity evaluation
The toxicological properties of isocyanates are attributed to the –N=C=O group. It is thought to react vigorously and exothermically with water forming an unstable carbamic acid that dissociates to form a primary amine with liberation of CO2. Hence, the primary amine will react further generating a urea derivative. Isocyanates also react readily with all organic compounds resulting in polymerization. Such reactions denature proteins, form abnormal crosslinkages, and generally disorganize the protein resulting in alteration of its normal function. This reactivity with proteins can account for its potency as a sensitizing agent. An IgE- or IgG-mediated mechanism has been proposed, but has not been definitively linked to isocyanate exposure. There is also evidence that inflammation and morphological changes of the bronchia mucosa and direct neurogenic mechanisms could be involved in the mechanics of toxicity. Thus, more than one reaction may occur in a system at a given time.
1,5-Naphthalene diisocyanate Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 1,5-Naphthalene diisocyanate manufacturers
- Product
- naphthylene-1,5-diisocyanate 3173-72-6
- Price
- US $0.00-0.00/Kg
- Min. Order
- 1Kg
- Purity
- 99.9%
- Supply Ability
- 200tons
- Release date
- 2024-03-28
- Product
- 1,5-Diisocyanatonaphthalene 3173-72-6
- Price
- US $50.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 50 tons
- Release date
- 2023-04-07
- Product
- 1,5-Naphthalene diisocyanate 3173-72-6
- Price
- US $0.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 50000KG/month
- Release date
- 2023-10-16