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    Phosphoric acid
    CAS No.: 7664-38-2 Formula: H3O4P Molecular Weight: 97.99520
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    Phosphoric acid

    CAS No.: 7664-38-2 Formula: H3O4P Molecular Weight: 97.99520
    Suppliers: All (124) China Suppliers (124) Price Available (14) Contractor (19)

    Description

    Phosphoric acid (also known as orthophosphoric acid or phosphoric(V) acid) is a mineral (inorganic) acid having the chemical formula H3PO4. Orthophosphoric acid refers to phosphoric acid, which is the IUPAC name for this compound. The prefix ortho is used to distinguish the acid from related phosphoric acids, called polyphosphoric acids. Orthophosphoric acid is a non-toxic acid, which, when pure, is a solid at room temperature and pressure. The conjugate base of phosphoric acid is the dihydrogen phosphate ion, H 2PO? 4, which in turn has a conjugate base of hydrogen phosphate, HPO2? 4, which has a conjugate base of phosphate, PO3? 4. Phosphates are nutritious for all forms of life.
    In addition to being a chemical reagent, phosphoric acid has a wide variety of uses, including as a rust inhibitor, food additive, dental and orthop(a)edic etchant, electrolyte, flux, dispersing agent, industrial etchant, fertilizer feedstock, and component of home cleaning products. Phosphoric acids and phosphates are also important in biology.
    The most common source of phosphoric acid is an 85% aqueous solution; such solutions are colourless, odourless, and non-volatile. The 85% solution is a syrupy liquid, but still pourable. Although phosphoric acid does not meet the strict definition of a strong acid, the 85% solution is acidic enough to be corrosive. Because of the high percentage of phosphoric acid in this reagent, at least some of the orthophosphoric acid is condensed into polyphosphoric acids. For the sake of labeling and simplicity, the 85% represents H3PO4 as if it were all orthophosphoric acid. Dilute aqueous solutions of phosphoric acid exist in the ortho- form.

    Basic Info

    Chemical Name Phosphoric acid
    Synonyms

    wc-reiniger; EVITs; H3PO4; PHOS ACID; NFB; Phosphoric; Sonac; Orthophosphoric acid; FEMA 2900; Marphos; Phosphorous acid; U.N. 1805; Expand

    CAS No. 7664-38-2
    Molecular Formula H3O4P
    Molecular Weight 97.99520
    PSA 87.57000
    LogP -0.92860

    Numbering system

    UNII E4GA8884NN

    Properties

    Appearance & Physical State White solid or colourless viscous liquid (>42 °C)
    Density 1.885 g/mL (liquid), 1.685 g/mL (85% solution), 2.030 g/mL (crystal at 25 °C)
    Boiling Point 158oC
    Melting Point 42.35 °C (無水化合物), 29.32 °C (半水化合物)
    Refractive Index 1.3420 (8.8% w/w aq. soln), 1.4320 (85% aq. soln) 25 °C
    Water Solubility MISCIBLE
    Stability Stable at room temperature in closed containers under normal storage and handling conditions.
    Storage Condition Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from metals. Corrosives area. Do not store in metal containers.
    Vapor Density 3.4 (vs air)
    Vapor Pressure 2.2 mm Hg ( 20 °C)

    Safety Info

    RTECS TB6300000
    Hazard Class 8
    Safety Statements S26-S45
    HS Code 2809201900
    WGK Germany 3
    Packing Group III
    RIDADR UN 3453 8/PG 3
    Risk Statements R34
    Hazard Codes C
    Signal Word Danger
    Symbol GHS05, GHS07
    Hazard Declaration H290; H302; H314
    Caution Statement P280; P301 + P312 + P330; P303 + P361 + P353; P304 + P340 + P310; P305 + P351 + P338
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    SAFETY DATA SHEETS

    According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

    Version: 1.0

    Creation Date: Aug 12, 2017

    Revision Date: Aug 12, 2017

    1.Identification

    1.1 GHS Product identifier

    Product name phosphoric acid

    1.2 Other means of identification

    Product number -
    Other names NFB

    1.3 Recommended use of the chemical and restrictions on use

    Identified uses For industry use only. Oxidants and Oxidant Stabilizers
    Uses advised against no data available

    1.4 Supplier's details

    Company MOLBASE (Shanghai) Biotechnology Co., Ltd.
    Address Floor 4 & 5, Building 12, No. 1001 North Qinzhou Road,
    Xuhui District, Shanghai, China
    Telephone +86(21)64956998
    Fax +86(21)54365166

    1.5 Emergency phone number

    Emergency phone number +86-400-6021-666
    Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

    2.Hazard identification

    2.1 Classification of the substance or mixture

    Skin corrosion, Category 1B

    2.2 GHS label elements, including precautionary statements

    Pictogram(s)
    Signal word

    Danger

    Hazard statement(s)

    H314 Causes severe skin burns and eye damage

    Precautionary statement(s)
    Prevention

    P260 Do not breathe dust/fume/gas/mist/vapours/spray.

    P264 Wash ... thoroughly after handling.

    P280 Wear protective gloves/protective clothing/eye protection/face protection.

    Response

    P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

    P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].

    P363 Wash contaminated clothing before reuse.

    P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

    P310 Immediately call a POISON CENTER/doctor/…

    P321 Specific treatment (see ... on this label).

    P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

    Storage

    P405 Store locked up.

    Disposal

    P501 Dispose of contents/container to ...

    2.3 Other hazards which do not result in classification

    none

    3.Composition/information on ingredients

    3.1 Substances

    Chemical name Common names and synonyms CAS number EC number Concentration
    phosphoric acid phosphoric acid 7664-38-2 none 100%

    4.First-aid measures

    4.1 Description of necessary first-aid measures

    General advice

    Consult a physician. Show this safety data sheet to the doctor in attendance.

    If inhaled

    Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention.

    In case of skin contact

    Wear protective gloves when administering first aid. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer immediately for medical attention .

    In case of eye contact

    Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention.

    If swallowed

    Rinse mouth. Give nothing to drink. Do NOT induce vomiting. Refer immediately for medical attention.

    4.2 Most important symptoms/effects, acute and delayed

    Burns on mouth and lips, sour acrid taste, severe gastrointestinal irritation, nausea, vomiting, bloody diarrhea, difficult swallowing, severe abdominal pains, thirst, acidemia, difficult breathing, convulsions, collapse, shock, death. (USCG, 1999)

    4.3 Indication of immediate medical attention and special treatment needed, if necessary

    Irrigate eyes with water; wash contaminated part of body with soap and water; gastric lavage (stomach wash) taking care not to perforate the gastrointestinal tract, if swallowed.

    5.Fire-fighting measures

    5.1 Extinguishing media

    Suitable extinguishing media

    Use water spray to keep fire-exposed containers cool. Extinguish fire using agent suitable for surrounding fire.

    5.2 Specific hazards arising from the chemical

    Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. For electric vehicles or equipment, ERG Guide 147 (lithium ion batteries) or ERG Guide 138 (sodium batteries) should also be consulted. (ERG, 2016)

    5.3 Special protective actions for fire-fighters

    Wear self-contained breathing apparatus for firefighting if necessary.

    6.Accidental release measures

    6.1 Personal precautions, protective equipment and emergency procedures

    Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8.

    6.2 Environmental precautions

    Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. Carefully collect remainder. Then wash away with plenty of water. Then store and dispose of according to local regulations.

    6.3 Methods and materials for containment and cleaning up

    Ventilate area of spill or leak. If in the solid form, collect spilled material in the most convenient and safe manner for reclamation or for disposal in a secured sanitary landfill. If in the liquid form, collect for reclamation or absorb in vermiculite, dry sand, earth, or a similar material.

    7.Handling and storage

    7.1 Precautions for safe handling

    Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.

    7.2 Conditions for safe storage, including any incompatibilities

    Dry. Well closed. Separated from food and feedstuffs and incompatible materials. See Chemical Dangers. Ventilation along the floor.Store in cool, dry, well-ventilated location. Separate from alkalies and most metals.

    8.Exposure controls/personal protection

    8.1 Control parameters

    Occupational Exposure limit values

    Recommended Exposure Limit: 10 Hr Time-Weighted avg: 1 mg/cu m.

    Recommended Exposure Limit: 15 Min Short-Term Exposure Limit: 3 mg/cu m.

    Biological limit values

    no data available

    8.2 Appropriate engineering controls

    Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.

    8.3 Individual protection measures, such as personal protective equipment (PPE)

    Eye/face protection

    Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

    Skin protection

    Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.

    Respiratory protection

    Wear dust mask when handling large quantities.

    Thermal hazards

    no data available

    9.Physical and chemical properties

    Physical state Clear liquid
    Colour Unstable orthorhombic crystals or clear syrupy liquid
    Odour Odorless
    Melting point/ freezing point 203°C(lit.)
    Boiling point or initial boiling point and boiling range 158°C(lit.)
    Flammability Noncombustible SolidNot combustible. Gives off irritating or toxic fumes (or gases) in a fire.
    Lower and upper explosion limit / flammability limit no data available
    Flash point 81°C(lit.)
    Auto-ignition temperature Not flammable (USCG, 1999)
    Decomposition temperature 213°C
    pH pH = 1.5 (0.1 N aqueous solution)
    Kinematic viscosity 3.86 mPa.s (40% solution at 20°C).
    Solubility In water:MISCIBLE
    Partition coefficient n-octanol/water (log value) -1.436
    Vapour pressure 2.2 mm Hg ( 20 °C)
    Density and/or relative density 1.685g/mLat 25°C(lit.)
    Relative vapour density 3.4 (vs air)
    Particle characteristics no data available

    10.Stability and reactivity

    10.1 Reactivity

    no data available

    10.2 Chemical stability

    Stable under recommended storage conditions.

    10.3 Possibility of hazardous reactions

    Not combustible.PHOSPHORIC ACID reacts exothermically with bases. May react with active metals, including such structural metals as aluminum and iron, to release hydrogen, a flammable gas. Can initiate the polymerization of certain classes of organic compounds. Reacts with cyanide compounds to release gaseous hydrogen cyanide. May generate flammable and/or toxic gases in contact with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and strong reducing agents. Forms explosive mixture with nitromethane. Reacts violently with sodium tetrahydroborate. In the presence of chlorides can corrode stainless steel to form explosive hydrogen gas. Emits toxic and irritating fumes of oxides of phosphorus when heated to decomposition [Lewis, 3rd ed., 1993, p. 1029].

    10.4 Conditions to avoid

    no data available

    10.5 Incompatible materials

    Reacts with metals to liberate flammable hydrogen gas.

    10.6 Hazardous decomposition products

    Combustion by-products include oxides of phosphorus.

    11.Toxicological information

    Acute toxicity

    • Oral: LD50 Rat oral 1530 mg/kg
    • Inhalation: LC50 Rabbit inhalation 1.689 mg/L 1 hr
    • Dermal: no data available

    Skin corrosion/irritation

    no data available

    Serious eye damage/irritation

    no data available

    Respiratory or skin sensitization

    no data available

    Germ cell mutagenicity

    no data available

    Carcinogenicity

    no data available

    Reproductive toxicity

    no data available

    STOT-single exposure

    no data available

    STOT-repeated exposure

    no data available

    Aspiration hazard

    no data available

    12.Ecological information

    12.1 Toxicity

    • Toxicity to fish: no data available
    • Toxicity to daphnia and other aquatic invertebrates: no data available
    • Toxicity to algae: no data available
    • Toxicity to microorganisms: no data available

    12.2 Persistence and degradability

    no data available

    12.3 Bioaccumulative potential

    no data available

    12.4 Mobility in soil

    When spilled onto soil, phosphoric acid will infiltrate downward, the rate being greater with lower concentration because of reduced viscosity. ... During transport through the soil, phosphoric acid will dissolve some of the soil material, in particular, carbonate-based materials. The acid will be neutralized to some degree with adsorption of the proton and phosphate ions also possible. However, significant amounts of acid will remain for transport. ... /If/ reaching the groundwater table, the acid will continue to move in the direction of groundwater flow. A contaminated plume will be produced with dilution and dispersion serving to reduce the acid concentration.

    12.5 Other adverse effects

    no data available

    13.Disposal considerations

    13.1 Disposal methods

    Product

    The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.

    Contaminated packaging

    Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.

    14.Transport information

    14.1 UN Number

    ADR/RID: UN1805 IMDG: UN1805 IATA: UN1805

    14.2 UN Proper Shipping Name

    ADR/RID: PHOSPHORIC ACID, SOLUTION
    IMDG: PHOSPHORIC ACID, SOLUTION
    IATA: PHOSPHORIC ACID, SOLUTION

    14.3 Transport hazard class(es)

    ADR/RID: 8 IMDG: 8 IATA: 8

    14.4 Packing group, if applicable

    ADR/RID: III IMDG: III IATA: III

    14.5 Environmental hazards

    ADR/RID: no IMDG: no IATA: no

    14.6 Special precautions for user

    no data available

    14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code

    no data available

    15.Regulatory information

    15.1 Safety, health and environmental regulations specific for the product in question

    Chemical name Common names and synonyms CAS number EC number
    phosphoric acid phosphoric acid 7664-38-2 none
    European Inventory of Existing Commercial Chemical Substances (EINECS) Listed.
    EC Inventory Listed.
    United States Toxic Substances Control Act (TSCA) Inventory Listed.
    China Catalog of Hazardous chemicals 2015 Listed.
    New Zealand Inventory of Chemicals (NZIoC) Listed.
    Philippines Inventory of Chemicals and Chemical Substances (PICCS) Listed.
    Vietnam National Chemical Inventory Listed.
    Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) Listed.

    16.Other information

    Information on revision

    Creation Date Aug 12, 2017
    Revision Date Aug 12, 2017

    Abbreviations and acronyms

    • CAS: Chemical Abstracts Service
    • ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
    • RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
    • IMDG: International Maritime Dangerous Goods
    • IATA: International Air Transportation Association
    • TWA: Time Weighted Average
    • STEL: Short term exposure limit
    • LC50: Lethal Concentration 50%
    • LD50: Lethal Dose 50%
    • EC50: Effective Concentration 50%

    References

    • IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
    • HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
    • IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
    • eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
    • CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
    • ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
    • ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
    • Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
    • ECHA - European Chemicals Agency, website: https://echa.europa.eu/

    Disclaimer: The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. We as supplier shall not be held liable for any damage resulting from handling or from contact with the above product.
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