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Isocyanates isocyanates

Isocyanates. Isocyanates in general are toxic chemicals and require great care in handling. Oral ingestion of substantial quantities of isocyanates can be tolerated by the human body, but acute symptoms may develop from the inhalation of much smaller amounts. The inhalation of isocyanates presents a ha2ard for the people who work with them as weU as the people who Hve in the proximity of an isocyanate plant. Adequate control of exposure is necessary to achieve a safe working environment. The suppHers Material Safety Data Sheets (MSDS) have to be consulted for the most current information on the safe handling of isocyanates. [Pg.353]

Indenopyrene, see Indeno[l,2,3-crf pyrene l//-Indole, see Indole Indolene, see Indoline Inexit, see Lindane Inhibisol, see 1,1,1-Trichloroethane Insecticide 497, see Dieldrin Insecticide 4049, see Malathion Insectophene, see a-Endosulfan, p-Endosulfan Intox 8, see Chlordane Inverton 245, see 2,4,5-T lodomethane, see Methyl iodide IP, see Indeno[l,2,3-crf pyrene IP3, see Isoamyl alcohol Ipaner, see 2,4-D IPE, see Isopropyl ether IPH, see Phenol Ipersan, see Trifluralin Iphanon, see Camphor Isceon 11, see Trichlorofluoromethane Isceon 122, see Dichlorodifluoromethane Iscobrome, see Methyl bromide Iscobrome D, see Ethylene dibromide Isoacetophorone, see Isophorone a-Isoamylene, see 3-Methyl-l-butene Isoamyl ethanoate, see Isoamyl acetate Isoamylhydride, see 2-Methylbutane Isoamylol, see Isoamyl alcohol Isobac, see 2,4-Dichlorophenol Isobenzofuran-l,3-dione, see Phthalic anhydride 1,3-Isobenzofurandione, see Phthalic anhydride IsoBuAc, see Isobutyl acetate IsoBuBz, see Isobutylbenzene Isobutane, see 2-Methylpropane Isobutanol, see Isobutyl alcohol Isobutene, see 2-Methylpropene Isobutenyl methyl ketone, see Mesityl oxide Isobutyl carbinol, see Isoamyl alcohol Isobutylene, see 2-Methylpropene Isobutylethylene, see 4-Methyl-l-pentene Isobutyl ketone, see Diisobutyl ketone Isobutyl methyl ketone, see 4-Methyl-2-pentanone Isobutyltrimethylmethane, see 2,2,4-Trimethylpentane Isocumene, see Propylbenzene Isocyanatomethane, see Methyl isocyanate Isocyanic acid, methyl ester, see Methyl isocyanate Isocyanic acid, methylphenylene ester, see 2,4-Toluene-diisocyanate... [Pg.1492]

CHLOROSULFONYL ISOCYANATE (Isocyanic acid, anhydride with chlorosulfonic acid)... [Pg.23]

The product of this rearrangement is called an isocyanate. Isocyanates react rapidly with water to form carbamic acids. [Pg.997]

Polyurethanes are produced by the reaction between alcohols and isocyanates. Isocyanates have a very reactive functional group that is subject to nucleophilic attack by an alcohol to give a carbamate or urethane ... [Pg.1074]

SYNS BENZENE, l-(l-ISOCYANATO-l-METHYLETH-YL)-3-(l-METHYLETHENYL)- a-a-DIMETHYL-m-ISOPROPENYL BENZYL ISOCYANATE ISOCYANIC ACID, m-ISOPROPENYL-a-a-DIMETHYL BENZYL ESTER m-TMI... [Pg.789]

This reaction shows the addition of an active hydrogen compound, HA, across the N=C double bond of an isocyanate. Isocyanates also react with water and the initial product is carbamic acid which is unstable, losing carbon dioxide, and generates an amine that reacts with the excess isocyanate to produce urea as follows ... [Pg.168]

Isocyanate (NCO) groups are energy-rich and highly reactive they react exothermically with hydrogen-active compounds, epoxides, and other isocyanates. Isocyanate groups will react most strongly with alcohol... [Pg.2369]

In summary, the major potential occupational health problem from excessive exposure to isocyanates is primary respiratory irritation. A fraction of workers exposed may develop a bronchial asthmatic reaction to isocyanates and there appears to be some cross reactivity. The most extensive study, including preexposure baseline respiratory function measurements, has provided data indicating that keeping exposures to TDI below 0.02 ppm (0.14 ug/ m3) appears to prevent decrement in respiratory function. There are less data on exposures and respiratory function of workers using other isocyanates. Isocyanates such as MDI are less volatile than TDI. There is less potential for exposure to vapors of the lower volatility isocyanates, but exposures to vapor and to particulates can occur and exposures to all isocyanates do need to be controlled in order to protect workers. [Pg.91]

ISOCYANATE de METHYLE (French) (624-83-9) see methyl isocyanate. ISOCYANATE METHANE (624-83-9) C2H3NO Highly flammable, polymerizable liquid. Forms explosive mixture with air [explosion limits in air (vol %) 5.3 to 26.0 flash point 0°F/-18°C 19°F/-7°C autoignition temp 995°F/535°C Fire Rating 3]. Decomposes slowly in cold water reacts violently with warm water or steam, forming carbon dioxide, dimethylurea, methylamine. [Pg.599]

NEODECANOIC ACID (26896-20-8) Forms explosive mixture with air (flash point 201°F/94°C). Incompatible with sulfuric acid, caustics, ammonia, aliphatic amines, alka-nolamines, isocyanates, isocyanates, alkylene oxides, epichlorohydrin, oxidizers. [Pg.844]

Benzene, 1-isocyanato-2- (4-isocyanatophe( yl)methyt)- 2,4 -Diisocyanatodiphenylmethane 2,4 -Diphenyl-methanediisocyanate EINECS 227-534-9 o-(p-lsocyanatobenzyl)phenyl isocyanate Isocyanic acid, diester with l4 -methylenediphenol. [Pg.218]

Allyl isocyanate (isocyanic C3H5NCO acid allyl ester) [1476-23-9] 83.12... [Pg.562]

Benzoyl isocyanate (isocyanic acid benzoyl ester) [4461-33-0]... [Pg.563]

Dichlorophenyl isocyanate (isocyanic acid 3,4-dichlorophenyl ester) [102-36-3]... [Pg.564]

Fluoroethyl isocyanate (isocyanic acid 2-fluoroethyl ester) [505-12-4]... [Pg.565]

Fluoropropyl isocyanate (isocyanic acid 4-fluorobutyl ester) [353-16-2]... [Pg.565]

Isocyanates. Isocyanates can be prepared by reaction of acid hydrazides with (1) to form N-acylimides on pyrolysis these products decompose to isocyanates (equation II). Isocyanates are also available by a related reaction (equation III). N-Amino-2,4,6-triphenylpyridinium perchlorate (11) is prepared by reaction of (1) with t-butyl carbazate (45% yield). [Pg.455]

Nitrenes, like carbenes, are immensely reactive and electrophilic, and the same Wolff-style migration (insertion into an adjacent C—C bond) takes place in which the substituent R migrates from carbon to the electron-deficient nitrogen atom of the nitrene. The product is an isocyanate. Isocyanates are unstable to hydrolysis attack by water on the carbonyl group gives a carbamlc acid, which decomposes to an amine. Alternatively, reaction with an alcohol gives a carbamate. If the alcohol is BnOH, the product is a Cbz-protected amine. [Pg.1022]

Manuf./Distnb. Acros Org. http //www.acros.be, Aldrich http //www.sigma-aidrich.com. King s Lab Lancaster Synthesis Pfaltz Bauer http //www.pfaltzandbauer. com TCI Am. http //www.tciamerica.com 3-Chlorophenyl isocyanate CAS 2909-38-8 EINECS/ELINCS 220-822-5 Synonyms Benzene, 1-chloro-3-isocyanato- 1-Chloro-3-isocyanatobenzene 3-Chloroisocyanatobenzene 3-Chlorophenylcarbonimide m-Chlorophenylcarbonimide Chlorophenyl isocyanate m-Chlorophenyl isocyanate Isocyanic acid, m-chlorophenyl ester MClC MCPI Classification Isocyanic acid ester Empihcal C7H4CINO Formula CIC6H4NCO... [Pg.907]

Synonyms 1,2-Dichloro-3-isocyanatobenzene Dichlorophenyl isocyanate 1,2-Dichloro-3-phenyl isocyanate Isocyanic acid, 2,3-dichlorophenyl ester... [Pg.1271]

Synonyms Benzene, 1,4-dichloro-2-isocyanato- 1,4-Dichloro-2-isocyanatobenzene 2,5-Dichlorophenyl carbimide Dichlorophenyl isocyanate 1,4-Dichloro-2-phenyl isocyanate Isocyanic acid, 2,5-dichlorophenyl ester Classification Isocyanic acid ester Empiricai C7H3CI2NO... [Pg.1272]

See other pages where Isocyanates isocyanates is mentioned: [Pg.320]    [Pg.1020]    [Pg.820]    [Pg.170]    [Pg.477]    [Pg.320]    [Pg.16]    [Pg.158]    [Pg.74]    [Pg.679]    [Pg.1275]    [Pg.396]    [Pg.260]    [Pg.261]    [Pg.17]    [Pg.9]    [Pg.18]    [Pg.138]    [Pg.564]    [Pg.565]    [Pg.565]    [Pg.907]   
See also in sourсe #XX -- [ Pg.103 , Pg.105 ]



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