AMINES Sample Clauses

AMINES. Amines are derivatives of ammonia in which one or more of the hydrogens has been replaced by an alkyl or aryl group. They have the general formula R-NH2 (primary, 1o), R2NH (secondary; 2o) or R3N (tertiary, 3o), in which R is an alkyl or aryl group. The hydrogens on the primary and secondary amines are active and undergo reaction with sodium metal to form a salt and liberate hydrogen gas. Primary and secondary amines react with acetyl chloride to produce amides which often precipitate out from the solution. Heat is also usually evolved in this reaction. Tertiary amines, however, do not react with acetyl chloride since they lack hydrogen on the nitrogen atom. The Hinsberg test can also be used to distinguish between 1o, 2o, and 3o amines. This test involves the reaction between the amines and the benzenesulfonyl chloride reagent under basic conditions. Primary amines react with benzenesulfonyl chloride under basic conditions to form the sodium salt of sulfonamide which is soluble in the reaction mixture. Precipitation of the sulfonamide will occur when the mixture is acidified. Similarly, secondary amide will react with benzenesulphonyl chloride under basic condition to form the sodium salt of sulfonamide which is insoluble in the reaction mixture and remains insoluble upon acidification. Tertiary amines undergo reactions with benzenesulfonyl chloride under basic condition to form the quaternary ammonium sulphonate salts which gives sodium sulfonate and insoluble tertiary amines in basic solution. Acidification of the reaction mixture gives sulfonic acids and soluble amine salts. Amines also react with nitrous acid and this reaction is used to distinguish not only 1o, 2o, or 3o amines, but also between aliphatic and aromatic amines. Primary aliphatic amines and aromatic amines react with nitrous acid to form an intermediate diazonium salt with the evolution of nitrogen gas. A primary aliphatic diazonium salt is unstable even at 0 oC and decomposes spontaneously with a rapid loss of nitrogen gas while primary aromatic amine diazonium salt is more stable at 0 oC and decomposes to liberate nitrogen gas only upon heating. The diazonium salt of the primary aromatic amine reacts with phenolic compounds such as 2- naphthol to form an orange-red azo compound. Secondary amines undergo a reaction with nitrous acid to form N-nitrosoamines which are usually yellow low melting solids. Tertiary aliphatic amines do not react with nitrous acid but form soluble salts as sho...
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Related to AMINES

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  • Geological and Archeological Specimens If, during the execution of the Work, the Contractor, any Subcontractor, or any servant, employee, or agent of either should uncover any valuable material or materials, such as, but not limited to, treasure trove, geological specimens, archival material, archeological specimens, or ore, the Contractor acknowledges that title to the foregoing is vested in the Owner. The Contractor shall notify the Owner upon the discovery of any of the foregoing, shall take reasonable steps to safeguard it, and seek further instruction from the Design Professional. Any additional cost incurred by the Contractor shall be addressed under the provision for changed conditions. The Contractor agrees that the Geological and Water Resources Division and the Historic Preservation Division of the Georgia Department of Natural Resources may inspect the Work at reasonable times.

  • Influenza Vaccination The parties agree that influenza vaccinations may be beneficial for patients and employees. Upon a recommendation pertaining to a facility or a specifically designated area(s) thereof from the Medical Officer of Health or in compliance with applicable provincial legislation, the following rules will apply:

  • Influenza Vaccine Upon recommendation of the Medical Officer of Health, all employees shall be required, on an annual basis to be vaccinated and or to take antiviral medication for influenza. If the costs of such medication are not covered by some other sources, the Employer will pay the cost for such medication. If the employee fails to take the required medication, she may be placed on an unpaid leave of absence during any influenza outbreak in the home until such time as the employee has been cleared by the public health or the Employer to return to the work environment. The only exception to this would be employees for whom taking the medication will result in the employee being physically ill to the extent that she cannot attend work. Upon written direction from the employee’s physician of such medical condition in consultation with the Employer’s physician, (if requested), the employee will be permitted to access their sick bank, if any, during any outbreak period. If there is a dispute between the physicians, the employee will be placed on unpaid leave. If the employee gets sick as a reaction to the drug and applies for WSIB the Employer will not oppose the application. If an employee is pregnant and her physician believes the pregnancy could be in jeopardy as a result of the influenza inoculation and/or the antiviral medication she shall be eligible for sick leave in circumstances where she is not allowed to attend at work as a result of an outbreak. This clause shall be interpreted in a manner consistent with the Ontario Human Rights Code.

  • Geological and archaeological finds It is expressly agreed that mining, geological or archaeological rights do not form part of this Agreement with the Contractor for the Works, and the Contractor hereby acknowledges that it shall not have any mining rights or interest in the underlying minerals, fossils, antiquities, structures or other remnants or things either of particular geological or archaeological interest and that such rights, interest and property on or under the Site shall vest in and belong to the Authority or the concerned Government Instrumentality. The Contractor shall take all reasonable precautions to prevent its workmen or any other person from removing or damaging such interest or property and shall inform the Authority forthwith of the discovery thereof and comply with such instructions as the concerned Government Instrumentality may reasonably give for the removal of such property. For the avoidance of doubt, it is agreed that any reasonable expenses incurred by the Contractor hereunder shall be reimbursed by the Authority. It is also agreed that the Authority shall procure that the instructions hereunder are issued by the concerned Government Instrumentality within a reasonable period.

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  • Biological Samples If so specified in the Protocol, Institution and Principal Investigator may collect and provide to Sponsor or its designee Biological Samples (“Biological Samples”). 12.2.

  • Inoculations The Employer agrees to pay full expenses for inoculation or immunization shots for the employee and for members of an employee’s household when such becomes necessary as a result of said employee’s exposure to contagious diseases (including AIDS, tuberculosis and hepatitis) where said officer has been exposed to said disease in the line of duty.

  • Contractor Sensitive Information 17.1 The Authority must:

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