Pyridine Physical and Chemical Properties and Quality Indicators
1.1 the basic situation of pyridine
Pyridine: also called nitrogen benzene;Pyridine bases;
English name: Pyridine;
Minor: C5H5N;
Points a quantity: 79.10;
CAS no.: 110-86-1
Pyridine is the heterocyclic compounds in the development of one of the most widely application scope variety, as an important fine chemical raw materials, its derivatives mainly has 2 - methyl pyridine, 3 - methyl pyridine, 4 - methyl pyridine, chlorinated pyridine, etc., mainly used in pesticide, medicine, dyestuff, daily chemical, spices, feed additives, rubber additives and other fields.Especially as the rapid development of the pesticide intermediates, pesticides containing pyridine group develops very fast in recent years, not only has high efficiency of pesticides, herbicides, and develop effective fungicide, and gradually formed a large family of specific pesticides series, containing pyridine ring structure of the compounds have become the main direction of new pesticides.
Is a great variety of pyridine compounds, the current industrial production has more than 70, are research and more than 30, has good prospects for development.
1.2 pyridine basic physical and chemical properties
Pyridine (Pyridine) at room temperature is a colorless liquid with special odor and containing a nitrogen heteroatom six-member heterocyclic compounds.Formula C5H5N, i.e., one of the benzene molecule - CH = be replaced by nitrogen compounds generated, so it is also called nitrogen benzene.
1.3 the safety of pyridine, storage and transportation, etc
Health hazard: pyridine strong excitant;Can anesthesia of the central nervous system.Can irritate the eyes and upper respiratory tract.High concentrations of inhaled, light person with euphoria or choking feeling, then depression, muscle weakness, vomiting;The person that weigh loss of consciousness, incontinence, entasia, drop in blood pressure.The mistake that can cause death.
Chronic effects: long-term inhalation of dizziness, headache, insomnia, gait instability and gastrointestinal dysfunction.Liver and kidney damage can occur.Can cause multiple neuropathy.Are irritating to the skin, can cause dermatitis, sometimes there is light sensibility dermatitis.
Combustion hazard: pyridine flammable products, has strong excitant.
Dangerous characteristic: pyridine products its vapor and air can form explosive mixture, open flame, hot easy to burning explosion.Contact with the oxidant violent reaction.When high temperature decomposition, nitrogen oxides release toxic gases.With sulfuric acid, nitric acid, chromic acid, fuming sulfuric acid, chlorosulfonic acid, maleic anhydride, silver perchlorate and other violent reaction, explosion hazard.Velocity too fast, easy to generate and accumulate static electricity.Its vapor is heavier than air, can spread in the low to very far place, fire will fire back to combustion.If encounter high fever, container pressure increase, is in danger of cracking and explosion.
Storage and transport: pyridine flammable products, has strong excitant.Store in a cool, ventilated warehouse.Away from fire and heat source.Library temperature should not be more than 30 ℃.Should with oxidant, acids, edible chemicals stored separately, mixed reservoir of avoid by all means.Use explosion-proof lighting, ventilation facilities.Banning the use of easy to produce the spark of mechanical equipment and tools.Storage area should be equipped with emergency treatment equipment and suitable for material.Commonly used packaging 200 [http://www.guidechem.com/cas-102/102767-28-2.html] kg/barrel.
Pyridine: also called nitrogen benzene;Pyridine bases;
English name: Pyridine;
Minor: C5H5N;
Points a quantity: 79.10;
CAS no.: 110-86-1
Pyridine is the heterocyclic compounds in the development of one of the most widely application scope variety, as an important fine chemical raw materials, its derivatives mainly has 2 - methyl pyridine, 3 - methyl pyridine, 4 - methyl pyridine, chlorinated pyridine, etc., mainly used in pesticide, medicine, dyestuff, daily chemical, spices, feed additives, rubber additives and other fields.Especially as the rapid development of the pesticide intermediates, pesticides containing pyridine group develops very fast in recent years, not only has high efficiency of pesticides, herbicides, and develop effective fungicide, and gradually formed a large family of specific pesticides series, containing pyridine ring structure of the compounds have become the main direction of new pesticides.
Is a great variety of pyridine compounds, the current industrial production has more than 70, are research and more than 30, has good prospects for development.
1.2 pyridine basic physical and chemical properties
Pyridine (Pyridine) at room temperature is a colorless liquid with special odor and containing a nitrogen heteroatom six-member heterocyclic compounds.Formula C5H5N, i.e., one of the benzene molecule - CH = be replaced by nitrogen compounds generated, so it is also called nitrogen benzene.
1.3 the safety of pyridine, storage and transportation, etc
Health hazard: pyridine strong excitant;Can anesthesia of the central nervous system.Can irritate the eyes and upper respiratory tract.High concentrations of inhaled, light person with euphoria or choking feeling, then depression, muscle weakness, vomiting;The person that weigh loss of consciousness, incontinence, entasia, drop in blood pressure.The mistake that can cause death.
Chronic effects: long-term inhalation of dizziness, headache, insomnia, gait instability and gastrointestinal dysfunction.Liver and kidney damage can occur.Can cause multiple neuropathy.Are irritating to the skin, can cause dermatitis, sometimes there is light sensibility dermatitis.
Combustion hazard: pyridine flammable products, has strong excitant.
Dangerous characteristic: pyridine products its vapor and air can form explosive mixture, open flame, hot easy to burning explosion.Contact with the oxidant violent reaction.When high temperature decomposition, nitrogen oxides release toxic gases.With sulfuric acid, nitric acid, chromic acid, fuming sulfuric acid, chlorosulfonic acid, maleic anhydride, silver perchlorate and other violent reaction, explosion hazard.Velocity too fast, easy to generate and accumulate static electricity.Its vapor is heavier than air, can spread in the low to very far place, fire will fire back to combustion.If encounter high fever, container pressure increase, is in danger of cracking and explosion.
Storage and transport: pyridine flammable products, has strong excitant.Store in a cool, ventilated warehouse.Away from fire and heat source.Library temperature should not be more than 30 ℃.Should with oxidant, acids, edible chemicals stored separately, mixed reservoir of avoid by all means.Use explosion-proof lighting, ventilation facilities.Banning the use of easy to produce the spark of mechanical equipment and tools.Storage area should be equipped with emergency treatment equipment and suitable for material.Commonly used packaging 200 [http://www.guidechem.com/cas-102/102767-28-2.html] kg/barrel.
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