1,5-나프탈렌 다이아이소사이안산

1,5-나프탈렌 다이아이소사이안산 속성

1,5-나프탈렌 다이아이소사이안산 MSDS

1,5-Naphthalene diisocyanate

1,5-나프탈렌 다이아이소사이안산 C화학적 특성, 용도, 생산

개요

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.

화학적 성질

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.

용도

Manufacture of polyurethane solid elastomers.

제조 방법

Naphthylene 1,5-diisocyanate (NDI) is prepared from naphthalene as follows:

일반 설명

White to light-yellow crystalline flakes.

반응 프로필

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)].

위험도

Irritant. Questionable carcinogen.

Safety Profile

A powerful allergen. An irritant. Questionable carcinogen. When heated to decomposition it emits toxic fumes of NOx.

환경귀착

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.

1,5-나프탈렌 다이아이소사이안산 준비 용품 및 원자재

원자재

준비 용품

1,5-나프탈렌 다이아이소사이안산 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Dayang Chem (Hangzhou) Co.,Ltd.	571-88938639 +8617705817739	info@dycnchem.com	CHINA	52867	58
QINGDAO HONG JIN CHEMCIAL CO.,LTD.	532-83657313	hjt@hong-jin.com	China	228	58
Hebei Mojin Biotechnology Co., Ltd	+8613288715578	sales@hbmojin.com	China	12456	58
airuikechemical co., ltd.	+undefined86-15315557071	sales02@airuikechemical.com	China	994	58
Shanghai Daken Advanced Materials Co.,Ltd	+86-371-66670886	info@dakenam.com	China	15928	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21691	55
Shanghai Time Chemicals CO., Ltd.	+86-021-57951555 +8617317452075	jack.li@time-chemicals.com	China	1807	55
Hangzhou FandaChem Co.,Ltd.	008657128800458; +8615858145714	fandachem@gmail.com	China	9348	55
Jiangsu Qingquan Chemical Co., Ltd.	+86-571-86589381,86589382,86589383	sales1@qqpharm.com	CHINA	154	55
Tianjin Zhongxin Chemtech Co., Ltd.	+86-022-66880623 +8618622897568	sales@tjzxchem.com	China	559	58

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