Supply High Quality Polyphosphoric Acid CAS: 8017-16-1
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Supply high quality polyphosphoric acid CAS: 8017-16-1
polyphosphoric acid Description:
English name: polyphosphoric acid
Other names: polyphosphate, polyphosphate
Chemical formula: Hn+2PnO3n+1
Molecular weight: 18+111n
CAS login number: 8017-16-1
EINECS login number: 232-417-0
Exterior: Colorless viscous liquid
Physical and chemical properties: colorless transparent viscous liquid, easy delix, no crystallization
polyphosphoric acid Specifications:
| ITEMS | industry grade | food grade |
| content(P2O5)≥ | ≥84% | ≥84% |
| sulfate | 0.01 | 0.002 |
| viscosity | 35000 | 35000 |
| chroma%≤ | 50 | 20 |
| heavy metal(Pb) ≤ | ≤0.01 | ≤0.003 |
| Fe% | ≤0.01 | ≤0.003 |
| As% | ≤0.01 | ≤0.005 |
polyphosphoric acid Application:
Polyphosphoric acid (PPA) is strongly dehydrated, low nucleophile and moderately acidic. Unlike sulfonic acid, polyphosphate generally does not oxidize the reactants and is soluble in organic solvents. Although its acidity is weaker than sulfonic acid, it is as dehydrating as sulfonic acid, so it is widely used in the laboratory. It is used as compound cyclization agent and acylation agent in organic synthesis. It is also used as a substitute for orthophosphoric acid and an analytical reagent.
Dangerous characteristics:
Reaction with metals releases hydrogen, which can form an explosive mixture with air. Decomposition by heat produces highly toxic phosphorus oxide flue gas. It is corrosive. Health hazard: The steam or fog is irritating to the eyes, nose and throat. Oral fluids can cause nausea, vomiting, abdominal pain, bloody stools or nausea. Skin-eye contact can cause burns. Chronic effects: nasal mucosa atrophy, nasal septum perforation. Long-term repeated skin contact can cause skin irritation.
Operational disposal and storage:
Operation precautions: closed operation, pay attention to ventilation. Operation as mechanized and automated as possible. Operators must be specially trained and strictly abide by operating procedures. It is recommended that operators wear a self-priming filter gas mask (half mask), chemical safety protective glasses, acid and alkali resistant plastic work clothes, and acid (alkali) resistant gloves. Prevent steam from escaping into the workplace air. Avoid contact with oxidants. When handling, light loading and unloading should be done to prevent damage to packaging and containers. Equipped with leak emergency treatment equipment. An empty container may contain harmful residue. When diluting or preparing the solution, care should be taken to slowly add the acid to the water to prevent overheating and spatter.
Transportation precautions:
During transportation, the transport vehicle shall be equipped with the corresponding variety and quantity of fire fighting equipment and leakage emergency treatment equipment. In summer, it's best to ship in the morning and evening. The trough (tank) car used in transportation should have a grounding chain, and a hole partition can be arranged in the trough to reduce static electricity generated by shock. It is strictly prohibited to mix with oxidants and halogens. During transportation, it should be protected from sun exposure, rain and high temperature. Stay away from flame, heat source and high temperature area during the stopover. The exhaust pipes of the vehicles carrying the articles must be equipped with fire retardant devices. Loading and unloading with mechanical equipment and tools that are easy to produce sparks are prohibited. Road transport should follow the prescribed route, do not stay in residential and densely populated areas. It is forbidden to slip them in railway transportation. Wooden ships and cement ships are strictly prohibited for bulk transportation.
Company infofmation:
Xiamen Ditai Chemicals Co., Ltd is a professional chemical company in China. Specializing deal and export various kinds of quality chemicals since 1997. The products Include industry chemical, Animal feed additive, Food additive, Agrochemical, Fertilizer, pharmaceuticals, water treatment and Minerals. Our management team has over 17 years of combined expertise meeting the needs of clients. We are proud our quality chemcials and service was approbated by the clients in the worldwide.
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