1,5-Naphthalene diisocyanate

ChemicalBook > CAS DataBase List > 1,5-Naphthalene diisocyanate

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

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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)
IARC: 3 (Vol. 19, Sup 7, 71) 1999
NIST Chemistry Reference: Naphthalene, 1,5-diisocyanato-(3173-72-6)
EPA Substance Registry System: 1,5-Naphthalene diisocyanate (3173-72-6)

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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
OEB: D
OEL: TWA: 0.040 mg/m3 (0.005 ppm), Ceiling: 0.170 mg/m3 (0.020 ppm) [10-minute]
RIDADR: 2206
RTECS: NQ9600000
HazardClass: 6.1(b)
PackingGroup: III
HS Code: 29291090

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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..…

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N-Bromosuccinimide Price

TCI Chemical

Product number: N0168
Product name: 1,5-Diisocyanatonaphthalene
Purity: >98.0%(GC)
Packaging: 25g
Price: $149
Updated: 2024/03/01

TCI Chemical

Product number: N0168
Product name: 1,5-Diisocyanatonaphthalene
Purity: >98.0%(GC)
Packaging: 100g
Price: $365
Updated: 2024/03/01

TRC

Product number: D679083
Product name: 1,5-Diisocyanatonaphthalene
Packaging: 250mg
Price: $50
Updated: 2021/12/16

AK Scientific

Product number: H176
Product name: 1,5-Naphthylenediisocyanate
Packaging: 25g
Price: $103
Updated: 2021/12/16

Frontier Specialty Chemicals

Product number: JK326787
Product name: 1,5-Diisocyanatonaphthalene
Purity: 98%
Packaging: 25g
Price: $119
Updated: 2021/12/16

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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

Hebei Zhuanglai Chemical Trading Co Ltd

Product: 1,5-Naphthalene diisocyanate 3173-72-6
Price: US $10.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 20 ton
Release date: 2024-11-25

Baoji Guokang Bio-Technology Co., Ltd.

Product: 1,5-Naphthalene diisocyanate 3173-72-6
Price: US $79.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 100T
Release date: 2021-06-02

airuikechemical co., ltd.

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

3173-72-6, 1,5-Naphthalene diisocyanateRelated Search:

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1,5-naphthalene

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1,5-Naphthalene diisocyanate ISO 9001：2015 REACH

3173-72-6

C10H6NCO2

C12H6N2O2