KANTO CORPORATION MATERIAL SAFETY DATA SHEET
Phosphoric Acid
Date of Preparation: September 2003 Revision: 2
Section 1 - Chemical Product and Company Identification
Product/Chemical Name: Phosphoric acid
Chemical Formula: H3PO4
Other Designations: Phosphoric Acid 20:1, Phosphoric Acid 80%, Phosphoric Acid 86%, Hydrogen phosphate, O-Phosphoric
Acid; Ortho-Phosphoramide; Orthophosphoric acid; Phosphoric acid (aqueous); white phosphoric acid
General Use: Inorganic phosphates, pickling metals, electropolishing, coatings for metals, chelating agent, and in
superphosphates.
Manufacturer: Kanto Corporation, 13424 N. Woodrush Way, Portland, OR 97203
Non-Emergency Contact: Customer Service, Phone (503) 283-0405, FAX (503) 240-0409
For All Transportation Emergencies Call CHEMTREC at 1-800-424-9300
Section 2 - Composition / Information on Ingredients
Ingredient Name CAS Number % by wt.
Phosphoric Acid 7664-38-2 7-86
De-Ionized Water 7732-18-5 Balance
Occupational Exposure Limits
OSHA PEL ACGIH TLV NIOSH REL NIOSH
Ingredient TWA STEL TWA STEL TWA STEL IDLH
Phosphoric 1 mg/m3 3 mg/m3 1 mg/m3 3 mg/m3 1 mg/m3 3 mg/m3 1000 ppm
Acid
Section 3 - Hazards Identification
HMIS
Emergency Overview 3
H
Corrosive! Symptoms of exposure may not be immediate! Destructive to soft tissues including eyes, skin, 0
F
and respiratory tract. Odorless, clear, syrupy liquid. Strong acid that can generate significant heat on 0
R
neutralization or diluting with water. Do not mix with solutions containing bleach or ammonia. PPE
Sec. 8
Potential Health Effects
Primary Entry Routes: Inhalation, eye and skin contact
Target Organs: Eyes, skin, respiratory system, bladder, and kidneys.
Acute Effects
Inhalation: Mists and vapors are extremely destructive to tissue of the mucous membranes and upper respiratory tract, eyes
and skin. Inhalation may result in severe swelling and fluid accumulation in the larynx and bronchi, chemical pneumonitis
and pulmonary edema. Symptoms include cyanosis, burning sensation, irritation of the nose, throat, and lungs, coughing,
wheezing, laryngitis, shortness of breath, hypotension, headache, nausea, and vomiting.
Eye: Contact with mist or liquid may cause irritation and severe eye burns leading to permanent damage.
Skin: Painful severe skin burns and ulcerations.
Ingestion: Nausea, vomiting, abdominal pain, bloody diarrhea and vomit, acidosis, shock, and irritation or burns of the mouth,
mucous membranes, esophagus, and stomach.
Carcinogenicity: Not listed
Medical Conditions Aggravated by Long-Term Exposure: Upper respiratory, chronic pulmonary, and skin conditions.
Chronic Effects: Long-term exposure may cause upper respiratory disease, dermatitis of the skin, and eye conjunctivitis.
Section 4 - First Aid Measures
Eye Contact: Gently lift eyelids and flush immediately and continuously with copious amounts of water for at least 15
minutes. Do not allow the victim to rub or keep eyes tightly shut. Consult an ophthalmologist immediately.
Skin Contact: Rinse with flooding amounts of water, while removing contaminated clothing, for at least 15 minutes. Wash
with soap and water. Seek medical attention immediately. Wash clothing before reuse.
Ingestion: If the victim is conscious, give large amounts of water. Seek medical attention immediately. Never give anything
by mouth to an unconscious or convulsing person.
Phosphoric Acid Revision: 2
Inhalation: Remove exposed person to an uncontaminated atmosphere and support breathing. If not breathing, give artificial
respiration. Seek medical attention immediately.
After first aid, seek immediate in-plant, paramedic, or community medical support.
Section 5 - Fire-Fighting Measures
NFPA
Flash Point: N/A
Auto ignition Temperature: N/A
0
LEL: N/A
0
3
UEL: None reported
--
Flammability Classification: Noncombustible liquid
Extinguishing Media: Carbon dioxide, dry chemical powder, water fog or appropriate foam; alcohol-resistant foam may also
be used.
Unusual Fire or Explosion Hazards: Decomposes when heated, as well as upon contact with most metals, to release
explosive hydrogen gas. Can form a detonable mixture with nitromethane. May ignite combustibles. Containers may
explode when heated.
Hazardous Combustion Products: Combustion products include irritating, corrosive and toxic phosphorous oxides,
pyrophosphoric acid, and phosphine.
Fire-Fighting Instructions: Use water spray to keep fire-exposed containers cool. Phosphoric acid sinks in and will mix with
water, evolving heat. Do not release runoff from fire control methods to sewers or waterways, as it may be corrosive and
toxic. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tanks, because vessel
may rupture. Stay away from ends of tanks.
Fire-Fighting Equipment: Because fire may produce toxic thermal decomposition products, wear a self-contained breathing
apparatus (SCBA) with a full-face piece operated in pressure-demand or positive-pressure mode. Prevent contact with skin
and eyes. Wear chemical protective clothing that is specifically recommended by the manufacturer.
Section 6 - Accidental Release Measures
Small Spills: Cover with dry lime or soda ash, dry earth, sand or other non-combustible material and carefully scoop up
material and place in a closed container. Do not get water inside containers. Ventilate area and wash spill site after material
pickup is complete. Spilled material can also be covered with sodium carbonate or mixture of soda ash and slaked lime while
adding water to form a slurry. Spill may then be discharged along with a large quantity of water into a containment basin.
Large Spills: Wear a self-contained breathing apparatus, rubber boots, heavy rubber gloves, and rubberized suit. Dike far
ahead of liquid spill for later disposal. Isolate spill or leak area immediately for at least 80 to 160 feet in all directions.
Eliminate all ignition sources, evacuate area, and stay upwind. Keep out of low areas and depressions. Ventilate enclosed
areas. Do not touch damaged containers or spilled materials unless wearing appropriate protective clothing. Stop leak if it
can be done without undue risk. Do not release into sewers or waterways.
Regulatory Requirements: Follow applicable OSHA regulations (29 CFR 1910.120).
Section 7 - Handling and Storage
Handling Precautions: Use in a well ventilated area; consider using in a chemical fume hood. Avoid inhalation and prolonged
or repeated exposure. Do not get in eyes, on skin, or on clothing. Do not use soft iron or alloy equipment. Do not allow
water to enter the container. Empty container may contain hazardous product residue and vapors. Follow all label warnings
even after the container is empty.
Storage Requirements: Keep tightly closed in a warm (20:1 - 40癋+; 80-86% - warm), well-ventilated location with other
corrosives. Store away from incompatible substances.
Section 8 - Exposure Controls / Personal Protection
Engineering Controls
Ventilation: Provide general or local exhaust ventilation systems to maintain airborne concentrations below OSHA PELs
(Sec. 2). Local exhaust ventilation is preferred because it prevents contaminant dispersion into the work area by controlling it
at its source.
Administrative Controls
Respiratory Protection: Seek professional advice prior to respirator selection and use. Follow OSHA respirator regulations
(29 CFR 1910.134) and, if necessary, wear a MSHA/NIOSH-approved respirator. Select respirator based on its suitability to
provide adequate worker protection for given working conditions, level of airborne contamination, and presence of sufficient
oxygen. For emergency or non-routine operations (cleaning spills, reactor vessels, or storage tanks), wear an SCBA.
Warning! Air-purifying respirators do not protect workers in oxygen-deficient atmospheres. If respirators are used, OSHA
requires a written respiratory protection program that includes at least: medical certification, training, fit testing, periodic
environmental monitoring, maintenance, inspection, cleaning, and convenient, sanitary storage areas.
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Phosphoric Acid Revision: 2
Protective Clothing/Equipment: Wear chemically protective gloves, boots, aprons, and gauntlets to prevent prolonged or
repeated skin contact. Wear protective eyeglasses or chemical safety goggles, per OSHA eye- and face-protection regulations
(29 CFR 1910.133). Contact lenses are not eye protective devices. Appropriate eye protection must be worn instead of, or in
conjunction with contact lenses.
Safety Stations: Make emergency eyewash stations, safety/quick-drench showers, and washing facilities available in work
area.
Contaminated Equipment: Separate contaminated work clothes from street clothes. Launder before reuse. Remove this
material from your shoes and clean personal protective equipment.
Comments: Never eat, drink, or smoke in work areas. Practice good personal hygiene after using this material, especially
before eating, drinking, smoking, using the toilet, or applying cosmetics.
Section 9 - Physical and Chemical Properties
Physical State: Liquid Water Solubility: Miscible
Appearance and Odor: Clear, colorless, odorless, liquid at Boiling Point: 275 癋 (135 癈) for 75-85%
50% and 75%, syrupy at 85% Freezing Point: concentration dependent
Vapor Pressure: 5.65 mm Hg at 20 癈 Viscosity: 12 centistokes at 25 癈
Vapor Density (Air=1): ~3.4 Refractive Index: 1.43
Formula Weight: 98.0 pH (0.1N solution): 1.5
Specific Gravity (H2O=1, at 4 癈): >1
Section 10 - Stability and Reactivity
Stability: Phosphoric acid is stable at room temperature in closed containers under normal storage and handling conditions.
Polymerization: Hazardous polymerization can occur with epoxides, azo compounds and compounds which can be
polymerized.
Chemical Incompatibilities: Reacts with alkalis to form phosphate salts. Is corrosive to metals and alloys especially in
granular or powdered form when hot. Liberates flammable hydrogen gas when exposed to chlorides and stainless steel.
Reacts violently with sodium tetrahydroborate. Causes reactions with nitromethane, sodium tetrahydroborate, aldehydes,
amines, amides, alcohols, glycols, azo-compounds, carbamates, esters, phenols, cresols, ketones, organophosphates, epozides,
explosives, combustible materials, unsaturated halides, organic peroxides, halogenated organics, nickel carbonate. May form
flammable or toxic fumes with sulfides, mercaptans, cyanides, and aldehydes. Do not mix with solutions containing bleach or
ammonia.
Conditions to Avoid: Avoid ignition sources, water in containers, excess heat, and incompatible materials.
Hazardous Decomposition Products: Thermal oxidative decomposition of phosphoric acid may produce pyrophosphoric acid,
phosphorus oxides and phosphine, and hydrogen gas.
Section 11- Toxicological Information*
Chronic Effects: Long-term exposure may cause upper
Acute Effects
Rabbit, eye, standard Draize test: 119 mg - Severe respiratory disease, dermatitis of the skin, and eye
Rabbit, skin, standard Draize test: 595 mg 24 hr - conjunctivitis.
Severe Carcinogenicity: None listed
Rabbit, skin, LD50: 2740 mg/kg Mutagenicity: None listed
Rat, inhalation, LC50: >850 mg/m3/1 hr Teratogenicity: None listed
Rat, oral, LD50: 1530 mg/kg
Human, unreported route, TDLo: 220 mg/kg
* See NIOSH, RTECS (TB6300000), for additional toxicity data.
Section 12 - Ecological Information
Ecotoxicity: Mosquito fish, TLm 138 mg/L/24 to 96 hr in turbid water at 72-75 癋. Lethal to fully developed fish in most
natural waters at pH 5.
Environmental Fate: It is dangerous to aquatic life in high concentrations by lowering the pH level. Phosphates are found in
natural waters and can persist indefinitely.
Soil Absorption/Mobility: When spilled onto soil, phosphoric acid will infiltrate downward. Increasing sodium concentration
makes the weakly adsorbed phosphorus unstable. Phosphoric acid will dissolve some of the soil material, in particular
carbonate-based materials, and will be neutralized to some degree. Upon reaching groundwater, the acid will continue to
move in the direction of groundwater flow forming a contaminated plume.
Section 13 - Disposal Considerations
Disposal: Contact your supplier or a licensed contractor for detailed recommendations. Neutralize to a pH of 5-9 before
releasing to a waste water treatment facility.
Disposal Regulatory Requirements: Follow applicable Federal, state, and local regulations.
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Phosphoric Acid Revision: 2
Section 14 - Transport Information
DOT Transportation Data (49 CFR 172.101):
Shipping Name: Phosphoric Packaging Authorizations Quantity Limitations
acid, liquid Exceptions: 173.154 Passenger, Aircraft, or Railcar: 5L
Hazard Class: 8 Non-bulk Packaging: 173.203 Cargo Aircraft Only: 60L
ID No.: UN1805 Bulk Packaging: 173.241
Packing Group: III Vessel Stowage Requirements
Label: 8 Vessel Stowage: A
Special Provisions (172.102):
A7, IB3, IP3, N34, T4, TP1 Emergency Response Guidebook # 154
Section 15 - Regulatory Information
EPA Regulations:
RCRA Hazardous Waste Number: (40 CFR 261.33) D002
RCRA Hazardous Waste Classification (40 CFR 261.22): Characteristic of Corrosivity
CERCLA Hazardous Substance (40 CFR 302.4) listed specific per RCRA, Sec. 3001; CWA, Sec. 311 (b)(4); CWA, Sec.
307(a), CAA, Sec. 112
CERCLA Reportable Quantity (RQ), 1000 lb (2270 kg) as 100% Phosphoric Acid
SARA Toxic Chemical (40 CFR 372.65): Not listed
SARA EHS (Extremely Hazardous Substance) (40 CFR 355): Not listed
TSCA: Listed
OSHA Regulations:
Air Contaminant (29 CFR 1910.1000, Table Z-1, Z-1-A): Listed
Section 16 - Other Information
Revision Notes: Revisions to Sections 3, 9, 11, and 14.
Disclaimer: This Material Safety Data Sheet is offered solely for the customer's information, consideration and investigation.
Kanto Corporation provides no express or implied warranties with respect to the information contained herein. Although all
data included in this MSDS is believed to be accurate, Kanto Corporation makes no representations as to its accuracy,
sufficiency or completeness. Conditions of use are beyond Kanto Corporation's control and therefore users are responsible to
verify this data under their own operating conditions to determine whether the product is suitable for their particular purposes,
and they assume all risks of their use, handling, and disposal of the product, or from the use of, or reliance upon, information
contained herein.
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