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The potential impact of flame retardants on the environment and human health
2017-10-9 10:52:38
The potential impact of flame retardants on the environment and human health
Flame retardant is one of the fastest growing varieties of plastic auxiliaries. According to the data, there are now more than 1.2 million tons of flame retardants worldwide, and the flame retardant system includes several hundred varieties, including halogen flame retardants, phosphor flame retardants and inorganic flame retardants. Due to the well-known environmental and toxicological reasons, the European Union began to carry out a mass production of flame retardants for environmental and human health potential impact assessments more than a decade ago. The flame retardants and phosphor flame retardants have been evaluated.
The assessment of the potential impact of flame retardants on the environment and human health has been concluded with the assessment of pentabromodiphenyl ether, octopodiphenyl ether and decabromodiphenyl ether. On 15 August 2004, the European Union banned pentabromodiphenyl ether and octadiphenyl ether. The risk assessment for decabromodiphenyl ether is a risk that is not seen in human health or the environment. Risk reduction is not necessary.
For tetrabromobisphenol A, hexabromocyclododecane, 3 (2 - ethyl chloride) phosphate ester (TCEP), 3 (2 - propyl chloride) phosphate ester (TCPP), phosphate (2, 3 - dichloro propyl) ester (TDCP) and 2, 2 - (methyl chloride) cyclopropane - 6 (V) other flame retardants, is in the eu in the process of risk assessment.
Meanwhile, some flame retardants such as antimony trioxide (Sb2O3) are also in the process of eu risk assessment. According to the experts, tetrabromobisphenol A is mainly used in printed circuit boards, and tetrabromobisphenol A is fully reflected in the epoxy resin, which forms the basic material of printed circuit board.
At present, the flame retardant potential impact on the environment and human health assessment part of human health has come to the conclusion that tetrabromobisphenol A without obvious risk, in any case don't have to take risk reduction measures; The environmental component of the risk assessment is still in line and is expected to be completed in 2006. In the process of eu risk assessment, more than 300 studies on tetrabromobisphenol A have been examined, and further research is under way.
Tris(2-chloroethyl)phosphate(TCEP)
There Are Three Industrial Methods: Phosphorus Oxychloride And Chloroethanol Reaction; Phosphorus Trichloride And Chloroethanol Reaction Reoxidation; Phosphorus Oxychloride And Ethylene Oxide Reaction (Industrial Commonly Used Method).
1, Phosphorus Oxychloride And Ethylene Oxide To Sodium Metavanadate As A Catalyst, At 50 ° C Reaction, The Reaction By Neutralization, Washing, Vacuum Dehydration Off The Low Boiling, That Is, The Finished Product. Chlorohydrin Can Also Be Used As Raw Materials, And Phosphorus Oxychloride Or Phosphorus Trichloride Reaction To Produce Tris (2-Chloro Ethyl) Phosphate.
2, 326 Kg Of Phosphorus Oxychloride And 1.0 Kg Of Sodium Metavanadate Into The Reactor. The Nitrogen In The Autoclave Was Driven By Nitrogen, And 650 Kg Of Ethylene Oxide Was Introduced Under Vacuum And Stirred At 45 To 50 ° C For 2 To 3 Hours. Evaporation Of Excess Ethylene Oxide After Alkali Neutralization To Neutral, Washed, Vacuum Dehydrated. Finished Product.
3. Put Phosphorus Oxychloride And Sodium Metaphosphate Into The Reactor. Nitrogen To Drive The Air, In The Vacuum Under The Access To Ethylene Oxide, At 45 ~ 50 ℃ Stirring 2 ~ 3h. Evaporation Of Excess Ethylene Oxide After Alkali Neutralization To Neutral, Washed, Vacuum Dehydrated Finished.
Tris(2-chloroethyl)phosphate(TCEP)Use:
1. Tris (2-Chloroethyl) Phosphate Has Excellent Flame Retardancy, Excellent Resistance To Low Temperature And UV Resistance, The Steam Can Only Be Used At 225 ℃ Above The Direct Ignition Can Be Fired, But The Fire The Source Is Immediately Self-Extinguishing. This Product Is A Flame Retardant Not Only Can Improve The Material Level Of Flame Retardant Materials, But Also Improve The Flame Resistance Of Water Resistance, Acid Resistance, Cold Resistance And Antistatic Properties. Commonly Used In Flame Retardant Nitrocellulose And Acetate Fiber As The Substrate Of Paint Coatings, Unsaturated Polyester, Polyurethane, Acrylic, Phenolic Resin, Can Also Be Used For Soft PVC Plastic Flame Retardant. This Product Is Used For The Amount Of Unsaturated Polyester 10% To 20%, In The Polyurethane Rigid Foam (Flame Retardant Polyether As Raw Material) Can Be About 10% In The Soft PVC Used As Auxiliary Plastic Flame Retardant When The 5% To 10%. Flame Retardants, Uranium, Thorium, Plutonium, Technetium And Other Rare Metal Separation Solvent Or Extractant.
2. This Product Is Widely Used In Chemical Fiber Fabrics, Cellulose Acetate As A Flame Retardant, In Addition To Self-Extinguishing, But Also Improve Water Resistance, Cold Resistance And Antistatic Properties. The General Amount Of 5 To 10 Copies. This Product Is An Excellent Flame Retardant For Synthetic Materials, And Has A Good Role In The Promotion, Widely Used In Cellulose Acetate, Nitrocellulose Varnish, Ethyl Cellulose, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane, Phenolic Resin , In Addition To Self-Extinguishing Products, But Also Improve The Physical Properties Of Products, Products Feel Soft, Also Known As Oil Additives And Rare Elements Of The Extractant, And Flame Retardant Rubber Conveyor Belt Is The Main Flame Retardant Materials , The General Amount Of Added 5% To 10%.
3. Used As Additive Type Halogenated Phosphate Flame Retardant And Plasticizer. Molecules In Both Phosphorus And Chlorine, Flame Retardant Effect Is Remarkable, Not Volatile And Hydrolysis, Good Stability To Ultraviolet Light. Applicable To Phenolic Resin, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane And So On. Also Used As Nitrocellulose Coating Flame Retardant, PVC Flame Retardant Plasticizer, Metal Extractant, Gasoline Additives And Polyimide Processing Aids And So On. Can Improve Water Resistance, Weatherability, Cold Resistance, Antistatic Property. Reference Dosage 5% To 20%.
Hexao-cyclododecane is mainly used for the polystyrene insulation board of textile materials in construction engineering. At present, the human health and environmental aspects of the eu's risk assessment are still under way. The eu-funded endocrine disruptor study found that six bromocyclohexadecane and tetrabromobisphenol A did not cause concern. A comprehensive risk assessment of the flame retardant effect on endocrine project conclusion suggests hexabromocyclododecane and toxicity of tetrabromobisphenol A general health and parameters (behavior, quality of survival, growth and related liver and gonad, etc.) are not affected.
There are also four chlorophosphate flame retardants (TCEP, TCPP, TDCP and v-6) currently in the eu risk assessment, mainly for polyurethane foam. The eu risk assessment for TCEP has been completed and needs to be announced. The risk assessment for TCPP, TDCP and v-6 is still ongoing in the human health and environment segment. At the same time, more tests and data collection are being carried out.
Sb2O3 is used as a synergistic agent for halogenated flame retardants or elastomers. At present, the human health and environmental aspects of the eu's risk assessment are still under way. A new discussion on human health is taking place in June and the environment is expected to be completed by the end of the year.
Any chemical can have both advantages and disadvantages to the human body and environment. The key is how to manage and properly use it, especially for flame retardants. We should base our conclusions on risk assessment, and in a scientific manner, let the flame retardant play its due role in the protection of human life and property.
The standard is the ministry of public security in order to effectively control in case a fire occurs in a public places causing casualties and property losses, by the national fire standardization technical committee subcommittee fire materials under centralized management. This standard has been clear about the public with the definition and classification of flame retardant products and components, combustion performance requirements and logo etc, provides for public use of building products, floor materials, wires and cables, sockets, switches, lamps and lanterns, plastic products such as home appliances shell, and used in the seat, sofa, mattress and foam thermal insulation layer of the combustion performance, put forward the corresponding requirement for flame retardant standard scale.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Flame retardant is one of the fastest growing varieties of plastic auxiliaries. According to the data, there are now more than 1.2 million tons of flame retardants worldwide, and the flame retardant system includes several hundred varieties, including halogen flame retardants, phosphor flame retardants and inorganic flame retardants. Due to the well-known environmental and toxicological reasons, the European Union began to carry out a mass production of flame retardants for environmental and human health potential impact assessments more than a decade ago. The flame retardants and phosphor flame retardants have been evaluated.
The assessment of the potential impact of flame retardants on the environment and human health has been concluded with the assessment of pentabromodiphenyl ether, octopodiphenyl ether and decabromodiphenyl ether. On 15 August 2004, the European Union banned pentabromodiphenyl ether and octadiphenyl ether. The risk assessment for decabromodiphenyl ether is a risk that is not seen in human health or the environment. Risk reduction is not necessary.
For tetrabromobisphenol A, hexabromocyclododecane, 3 (2 - ethyl chloride) phosphate ester (TCEP), 3 (2 - propyl chloride) phosphate ester (TCPP), phosphate (2, 3 - dichloro propyl) ester (TDCP) and 2, 2 - (methyl chloride) cyclopropane - 6 (V) other flame retardants, is in the eu in the process of risk assessment.
Meanwhile, some flame retardants such as antimony trioxide (Sb2O3) are also in the process of eu risk assessment. According to the experts, tetrabromobisphenol A is mainly used in printed circuit boards, and tetrabromobisphenol A is fully reflected in the epoxy resin, which forms the basic material of printed circuit board.
At present, the flame retardant potential impact on the environment and human health assessment part of human health has come to the conclusion that tetrabromobisphenol A without obvious risk, in any case don't have to take risk reduction measures; The environmental component of the risk assessment is still in line and is expected to be completed in 2006. In the process of eu risk assessment, more than 300 studies on tetrabromobisphenol A have been examined, and further research is under way.
Tris(2-chloroethyl)phosphate(TCEP)
There Are Three Industrial Methods: Phosphorus Oxychloride And Chloroethanol Reaction; Phosphorus Trichloride And Chloroethanol Reaction Reoxidation; Phosphorus Oxychloride And Ethylene Oxide Reaction (Industrial Commonly Used Method).
1, Phosphorus Oxychloride And Ethylene Oxide To Sodium Metavanadate As A Catalyst, At 50 ° C Reaction, The Reaction By Neutralization, Washing, Vacuum Dehydration Off The Low Boiling, That Is, The Finished Product. Chlorohydrin Can Also Be Used As Raw Materials, And Phosphorus Oxychloride Or Phosphorus Trichloride Reaction To Produce Tris (2-Chloro Ethyl) Phosphate.
2, 326 Kg Of Phosphorus Oxychloride And 1.0 Kg Of Sodium Metavanadate Into The Reactor. The Nitrogen In The Autoclave Was Driven By Nitrogen, And 650 Kg Of Ethylene Oxide Was Introduced Under Vacuum And Stirred At 45 To 50 ° C For 2 To 3 Hours. Evaporation Of Excess Ethylene Oxide After Alkali Neutralization To Neutral, Washed, Vacuum Dehydrated. Finished Product.
3. Put Phosphorus Oxychloride And Sodium Metaphosphate Into The Reactor. Nitrogen To Drive The Air, In The Vacuum Under The Access To Ethylene Oxide, At 45 ~ 50 ℃ Stirring 2 ~ 3h. Evaporation Of Excess Ethylene Oxide After Alkali Neutralization To Neutral, Washed, Vacuum Dehydrated Finished.
Tris(2-chloroethyl)phosphate(TCEP)Use:
1. Tris (2-Chloroethyl) Phosphate Has Excellent Flame Retardancy, Excellent Resistance To Low Temperature And UV Resistance, The Steam Can Only Be Used At 225 ℃ Above The Direct Ignition Can Be Fired, But The Fire The Source Is Immediately Self-Extinguishing. This Product Is A Flame Retardant Not Only Can Improve The Material Level Of Flame Retardant Materials, But Also Improve The Flame Resistance Of Water Resistance, Acid Resistance, Cold Resistance And Antistatic Properties. Commonly Used In Flame Retardant Nitrocellulose And Acetate Fiber As The Substrate Of Paint Coatings, Unsaturated Polyester, Polyurethane, Acrylic, Phenolic Resin, Can Also Be Used For Soft PVC Plastic Flame Retardant. This Product Is Used For The Amount Of Unsaturated Polyester 10% To 20%, In The Polyurethane Rigid Foam (Flame Retardant Polyether As Raw Material) Can Be About 10% In The Soft PVC Used As Auxiliary Plastic Flame Retardant When The 5% To 10%. Flame Retardants, Uranium, Thorium, Plutonium, Technetium And Other Rare Metal Separation Solvent Or Extractant.
2. This Product Is Widely Used In Chemical Fiber Fabrics, Cellulose Acetate As A Flame Retardant, In Addition To Self-Extinguishing, But Also Improve Water Resistance, Cold Resistance And Antistatic Properties. The General Amount Of 5 To 10 Copies. This Product Is An Excellent Flame Retardant For Synthetic Materials, And Has A Good Role In The Promotion, Widely Used In Cellulose Acetate, Nitrocellulose Varnish, Ethyl Cellulose, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane, Phenolic Resin , In Addition To Self-Extinguishing Products, But Also Improve The Physical Properties Of Products, Products Feel Soft, Also Known As Oil Additives And Rare Elements Of The Extractant, And Flame Retardant Rubber Conveyor Belt Is The Main Flame Retardant Materials , The General Amount Of Added 5% To 10%.
3. Used As Additive Type Halogenated Phosphate Flame Retardant And Plasticizer. Molecules In Both Phosphorus And Chlorine, Flame Retardant Effect Is Remarkable, Not Volatile And Hydrolysis, Good Stability To Ultraviolet Light. Applicable To Phenolic Resin, Polyvinyl Chloride, Polyvinyl Acetate, Polyurethane And So On. Also Used As Nitrocellulose Coating Flame Retardant, PVC Flame Retardant Plasticizer, Metal Extractant, Gasoline Additives And Polyimide Processing Aids And So On. Can Improve Water Resistance, Weatherability, Cold Resistance, Antistatic Property. Reference Dosage 5% To 20%.
Hexao-cyclododecane is mainly used for the polystyrene insulation board of textile materials in construction engineering. At present, the human health and environmental aspects of the eu's risk assessment are still under way. The eu-funded endocrine disruptor study found that six bromocyclohexadecane and tetrabromobisphenol A did not cause concern. A comprehensive risk assessment of the flame retardant effect on endocrine project conclusion suggests hexabromocyclododecane and toxicity of tetrabromobisphenol A general health and parameters (behavior, quality of survival, growth and related liver and gonad, etc.) are not affected.
There are also four chlorophosphate flame retardants (TCEP, TCPP, TDCP and v-6) currently in the eu risk assessment, mainly for polyurethane foam. The eu risk assessment for TCEP has been completed and needs to be announced. The risk assessment for TCPP, TDCP and v-6 is still ongoing in the human health and environment segment. At the same time, more tests and data collection are being carried out.
Sb2O3 is used as a synergistic agent for halogenated flame retardants or elastomers. At present, the human health and environmental aspects of the eu's risk assessment are still under way. A new discussion on human health is taking place in June and the environment is expected to be completed by the end of the year.
Any chemical can have both advantages and disadvantages to the human body and environment. The key is how to manage and properly use it, especially for flame retardants. We should base our conclusions on risk assessment, and in a scientific manner, let the flame retardant play its due role in the protection of human life and property.
The standard is the ministry of public security in order to effectively control in case a fire occurs in a public places causing casualties and property losses, by the national fire standardization technical committee subcommittee fire materials under centralized management. This standard has been clear about the public with the definition and classification of flame retardant products and components, combustion performance requirements and logo etc, provides for public use of building products, floor materials, wires and cables, sockets, switches, lamps and lanterns, plastic products such as home appliances shell, and used in the seat, sofa, mattress and foam thermal insulation layer of the combustion performance, put forward the corresponding requirement for flame retardant standard scale.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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