Phosphoric Acid( PA)

Material Safety Data Sheet

Date Prepared:        15 March 1998
Revised:                   13 August 2013

Item Description

 

Section 1-Production information
Chemical Name: Phosphoric acid, PA
Chemical Formula: H₃PO₄

Section 2 - Composition/Information on Ingredients
Phosphoric acid, PA

Ingredient Name: Phosphoric acid, PA
Ingredient CAS Number: 7664-38-2

Section 3 - Hazards Identification, Including Emergency Overview
Phosphoric acid, PA

Health hazards: Vapor or mist the eye, nose and throat irritation. Oral fluids can cause nausea, vomiting, abdominal pain, blood or body g. Skin oreye contact can cause burns. Chronic effects: atrophy of the nasal mucosa, nasal septum perforation. Long-term repeated skin contact can cause skin irritation.
Environmental hazards：Hazard to the environment, can cause pollution of water bodies.
Explosion hazard：This product is flammable, corrosive, irritant, can cause the bodyburns.

Section 4 - First Aid Measures
Phosphoric acid, PA 

Skin contact: Immediately remove contaminated clothing, rinse with plenty of water for at least 15 minutes. Medical treatment.
Eye contact: Immediately filed eyelid, with plenty of water or saline thoroughly washed at least 15 minutes. Medical treatment.
Inhalation: From the scene to fresh air. If breathing is difficult, give oxygen. Medical treatment.
Ingestion: Wash with water, to blues or egg white. Medical treatment.

Section 5 - Fire Fighting Measures
Phosphoric acid, PA

Hazardous characteristics：Case of metal reaction to release hydrogen, can form explosive mixtures with air. Thermal decomposition to produce highly toxicphosphorus oxide gas.Corrosive.
Hazardous combustion products：Phosphine oxide。
Fire fighting methods：Use water spray to keep containers cool scene. With plenty of water for fire fighting.

Section 6 - Accidental Release Measures
Phosphoric acid, PA

Emergency treatment: Isolation leakage polluted area, restricting access.Recommended emergency personnel wearing a dust mask (full face mask), towear anti-acid. Do not direct contact with the spill. A small leak:clean shovel collection in a dry, clean, covered containers. Large Leak: recycling or collection shipped to the waste disposal sites.

Section 7 - Handling and Storage
Phosphoric acid, PA

Handling Precautions: Closed operation, attention to ventilation.Operation as much as possible the mechanization and automation. The operator must go through specialized training, and strictly abide by the rules.Suggested that the operating personnel wearing self-absorptionfilter respirators (half-mask), wearing chemical protective safetyglasses and wear rubber acid suit, wearing rubber gloves acid.Keep away from flammable and combustible materials. Avoid generating dust. Avoid contact with alkali, active metal powder.Handle gently, to prevent damage to packaging and containers.With spill contingency processing equipment. The empty containers may be harmful residues. Dilution or preparation of solutions should be carefully acid slowly added to the water to prevent overheating and splash.

Storage: Store in a cool, ventilated coffers.Keep away from fire and heat source. Sealed packaging.Should be easy (can) combustible, bases, reactive metal powder stored separately to avoid mixing reservoir. The storage area should be equipped with suitablematerial spill.

Section 8 - Exposure Controls & Personal Protection
Phosphoric acid, PA

China  MAC(mg/m3)：Did not develop standards
BeforeThe Soviet Union MAC(mg/m3)：Did not develop standards
TLVTN：OSHA 1mg/m3;ACGIH 1mg/m3
TLVWN：ACGIH 3mg/m3
Engineering controls: Closed operation, attention to ventilation. As far as possiblemechanization and automation. Provide safety showers and eyewash equipment.
Respiratory protection: Possible exposure to vapor, must wear self-absorption filter respirators (half-mask); possible exposure to dust, it is recommended to wear self-absorption filter respirators.
Eye protection: Wear chemical safety glasses.
Body protection: Wear rubber acid suit.
Hand protection: Wear rubber gloves.
Other protection: Workplace no smoking, eating and drinking, wash hands before eating. Work is completed, take a shower. Separate storage oftoxic pollution by the clothes, washed standby. To maintain goodhealth habits.

Section 9 - Physical & Chemical Properties
Phosphoric acid, PA

Main components: ≥85.0％
Appearance and properties: Pure phosphoric acid is a colorless crystal, odorless, has a sour taste.
Melting point (℃):42.4
Boiling Point (℃): 260
Relative density (water = 1):1.87
Relative vapor density (air = 1): 3.38
Saturated vapor pressure (kPa): 0.67
Heat of combustion (kJ / mol): Pointless
Critical temperature (℃): Pointless
Crystallization point(℃): <20
Octanol / water partition coefficient values: No Data
Flash point (℃): Pointless
Ignition temperature (℃): Pointless
Upper explosive limit% (V / V): Pointless
Lower explosive limit% (V / V): Pointless
Solubility: Miscible with water, immiscible in ethanol.
Main purposes: For pharmaceuticals, pigments, electroplating, rust, etc.

Section 10 - Stability & Reactivity Data
Phosphoric acid, PA

Materials to Avoid: Strong base, active metal powder, flammable or combustible.

Section 11 - Toxicological Information
Phosphoric acid, PA

Acute toxicity: LD50：1530 mg/kg (rat oral) 2740 mg/kg Rabbit percutaneous LC50: No Data
Irritating:Rabbiteyes: 119mg, severe irritation. Rabbits percutaneous:595mg/24 hours,, severe stimulation.

Section 12 - Ecological Information
Phosphoric acid, PA

Harmful effects of: The substance is harmful to the environment should pay particular attention to water pollution.

Section 13 - Disposal Considerations
Phosphoric acid, PA

Waste Disposal Method: Was slowly added alkali - lime, and keep stirring, the reaction stops, with plenty of water into the wastewater system.

Section 14 - MSDS Transport Information
Phosphoric acid, PA

Transport Information:
Dangerous Goods Code: 81501
UN Number: 1805
Packing Group:o53
Packing method: Glass or plastic barrel (tank) outside the ordinary wooden orhalf-latticed wooden box; matte mouth glass or threaded glassoutside the ordinary wooden; threaded glass, metal coverpressure bottles, plastic bottles or metal(cans) outside the ordinary wooden box.
Transportation Note: Packaging to the time of shipment, loading should be safe. During transport to ensure that the container does not leak, did not fall, notfall, no damage.Mixed mixed operation with flammable orcombustible materials, bases, active metal powder, food chemicals, etc. is strictly prohibited. Transport, transport vehiclesshould be equipped with spill response equipment. Transit should prevent sunlight, rain, high temperature.

Section 15 - Regulatory Information
Phosphoric acid, PA

Regulatory Information: Dangerous chemicals safety regulations issued by the State Council (February 17, 1987), dangerous chemicals safety management Implementation of the Regulations (the Labor Fa [1992] No. 677), the workplace safe use of chemicals regulations([1996] Ministry of LaborNo. 423) and other regulations for thesafety of hazardous chemicals, production, storage, transportation, loading and unloading are made ​​to corresponding provisions;commonly used in the classification and identification ofhazardous chemicals (GB 13690-92) the substance is classified as section 8.1class of acid corrosion products.

[ Back ]