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Phthalic Anhydride Pure AR LR ACS Analytical Reagent Manufacturers

Phthalic Anhydride CAS Number 85-44-9, EINECS EC Number 201-607-5, HS Code 2917.35.00.00, Molecular Weight 148.1, Molecular Formula: C8H4O3

For MSDS Sheet Click MSDS Sheet of Manufacturers

Phthalic Anhydride
Commercial Pure Powder Granules Flakes LR AR ACS Analytical Reagent Grade
Phathalic Anhydride Granules

We also offer Phthalic Acid.

Phthalic anhydride C6H4(CO)2O is the anhydride of phthalic acid. Phthalic anhydride is a principal commercial form of phthalic acid. It was the first anhydride of a di-carboxylic acid to be used commercially. It is a colourless solid, important industrial chemical, especially for the large-scale production of plasticizers.

Phthalic anhydride is a toxic, white crystalline compound used in the manufacture of phthaleins and other dyes, resins, plasticizers, and insecticides. The primary use of phthalic anhydride (PA) is as a chemical intermediate in the production of plasticizers from polyvinyl chloride (PVC). The primary use of Phthalic Anhydride is as a chemical intermediate in the production of plastics from vinyl chloride. Phthalate esters, which function as plasticizers, are derived from Phthalic Anhydride. Phthalate plasticizers are used for the production of flexible PVC products such as cables, pipes and hoses, leather cloth, shoes, film for packaging etc. Phthalic Anhydride has another major use in the production of polyester resins and other minor uses in the production of alkyd resins used in paints and lacquers; certain dyes (anthraquinone, phthalein, rhodamine, phthalocyanine, fluorescin, and xanthene dyes); insect repellents; and polyester polyols for polyurethanes. Besides, it is also utilized as a rubber scorch inhibitor and retarder.

Specification of Phthalic Anhydride
Physical Appearance Snow White
Colour of molten material (APHA Max) 20
Colour of molten material at 250oC for 90 minutes (APHA Max) 40
Solidification Point (oC Min) 130.80
Purity by G.C. as C8H4O3 (%weight Min.) 99.80
Maleic Anhydride & other Oxidizable impurities (%weight Max.) 0.05

We offer all grade, including powder, granules and flakes.


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Last 14 August, 2017

List of All the IP BP USP FCC ACS Grades of Chemicals
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Calcium Fumarate Calcium Formate
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Copper Sulfate Sulphate Ferrous Sulfide, Iron Sulphide
Hydroxyethylidene diphosphonic acid, HEDP phosphonate Isatoic Anhydride
Magnesium Chloride Magnesium Sulfate
Potassium Chloride Phthalic Acid
Phthalic Anhydride Potassium Iodide
Potassium Bromide Potassium Phosphate
Potassium Nitrate Nitrite Sodium Bromide
Sodium Acetate Sodium Formaldehyde Bisulfite
Sodium Thiosulfate Sodium Diacetate
Sodium Butyrate Sodium Nitrite Nitrate
Sodium Formate Sodium Phosphate
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Phthalic Anhydride SDS MSDS Sheet, Material Safety Data Sheet

1. Product Identification

Synonyms: 1,3-Isobenzofurandione; 1, 2-benzenedicarboxylic acid anhydride; 1, 3-dioxophthalan.
CAS No.:
Einecs EC Number: 201-607-5
Molecular Formula: C8H4O3
Molecular Weight: 148.13
Intended Use: Oil & Gas Wells fracturing and Industrial Manufacturing.
Suppliers: As per letterhead

2. Hazards Identification

GHS, Globally Harmonized System Classification in accordance with 29 CFR 1910
Classification according to Regulation (EC) No 1272/2008

Acute toxicity, Oral (Category 4)
Skin irritation (Category 2)
Serious eye damage (Category 1)
Respiratory sensitization (Category 1),
Skin sensitization (Category 1),
Specific target organ toxicity - single exposure (Category 3), Respiratory system

Labeling according GHS USA & Regulation (EC) No 1272/2008

GHS Label Elements
Health Hazard
Health Hazard

GHS Label Elements

Signal Words: Danger

Hazard statements:
H302: Harmful if swallowed.
H315: Causes Skin Irritation.
H317: May cause an allergic skin reaction.
H318: Causes serious eye damage
H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled.
H335: May cause respiratory irritation

Precautionary statements:
P260: Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash thoroughly after handling.
P270: Do not eat, drink or smoke when using this product.
P271: Use only outdoors or in a well-ventilated area.
P272: Contaminated work clothing should not be allowed out of the workplace.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P285: In case of inadequate ventilation wear respiratory protection.
P314: Get medical advice/attention if you feel unwell.
P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor/ physician if you feel unwell.
P302+P352: IF ON SKIN: Wash with plenty of soap and water.
P304+P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P332 + P313: If skin irritation occurs: Get medical advice/attention.
P337+P313: If eye irritation persists: Get medical advice / attention.
P501: Dispose of contents/container in accordance with local/regional/national/international regulation.

Classification according to EU Directives 67/548/EEC or 1999/45/EC:
Xn Harmful, Xi Irritant
R22 Harmful if swallowed
R36/37/38 Irritating to eyes, respiratory system and skin
For the full text of the H-statements & R-phrases mentioned in this Section, see Section 16.

3. Composition/Information on Ingredients

Ingredient: Phthalic Anhydride (contains less than 0.05 percent maleic anhydride or maleic acid).
CAS No.: 85-44-9
Einecs EC Number: 201-607-5
Percent: 98-100%

4. First Aid Measures

Always seek medical attention after first aid measures are provided.

Inhalation: If Phthalic Anhydride is inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen and get medical attention immediately.
Ingestion: Do not induce vomiting unless as directed by medical personnel. Never give anything by mouth to an unconscious person. Get medical attention.
Skin Contact: Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical attention. Wash clothing and shoes before reuse.
Eye Contact:
Remove contact lenses. Immediately flush eyes with plenty of water for at least 15 minutes, lifting lower and upper eyelids occasionally. Get medical attention immediately.
Notes to Physician: Treat symptomatically and supportively.

5. Fire Fighting Measures

Fire: As with most organic solids, fire is possible at elevated temperatures or by contact with an ignition source.
Auto-Ignition Temperature: 570°C (1058°F)
Flash Points: CLOSED CUP: 151.67°C (305°F). OPEN CUP: 165°C (329°F).
Flammable Limits: LOWER: 1.7% UPPER: 10.4%
Explosion: Fine dust dispersed in air in sufficient concentrations, and in the presence of an ignition source is a potential dust explosion hazard.
Fire Extinguishing Media: Water spray, dry chemical, alcohol foam, fog or carbon dioxide.
Products of Combustion: These products are fumes and carbon oxides (CO, CO2).
Special Information: In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full face piece operated in the pressure demand or other positive pressure mode.
NFPA: Health 3, Flammability 1,  Instability 0, Physical hazards N/A
Protective Equipment: Gloves. Synthetic apron. Vapor and dust respirator. Be sure to use an approved/certified respirator or equivalent. Wear appropriate respirator when ventilation is inadequate. Splash goggles.

6. Accidental Release Measures

Small Spill: Use appropriate tools to put the spilled solid in a convenient waste disposal container.
Large Spill:
Corrosive solid. Poisonous solid. Stop leak if without risk. Do not get water inside container. Do not touch spilled material. Use water spray to reduce vapors. Prevent entry into sewers, basements or confined areas; dike if needed. Eliminate all ignition sources.

7. Handling and Storage
Keep Phthalic Anhydride in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage. Isolate from incompatible substances. Containers of Phthalic Anhydride may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product. Avoid dust formation and control ignition sources. Employ grounding, venting and explosion relief provisions in accord with accepted engineering practices in any process capable of generating dust and/or static electricity. Empty only into inert or non-flammable atmosphere. Emptying contents into a non-inert atmosphere where flammable vapors may be present could cause a flash fire or explosion due to electrostatic discharge.

8. Exposure Controls/Personal Protection

Airborne Exposure Limits:
OSHA (USA): 2 ppm TWA; 12 mg/m3 TWA
ACGIH: 1 ppm TWA
NIOSH: 1 ppm TWA; 6 mg/m3 TWA
Ventilation System: A system of local and/or general exhaust is recommended to keep employee exposures as low as possible. Local exhaust ventilation is generally preferred because it can control the emissions of the contaminant at its source, preventing dispersion of it into the general work area. Please refer to the ACGIH document, Industrial Ventilation, A Manual of Recommended Practices, most recent edition, for details.
Personal Respirators (NIOSH Approved): For conditions of use where exposure to dust or mist is apparent and engineering controls are not feasible, a particulate respirator (NIOSH type N95 or better filters) may be worn. If oil particles (e.g. lubricants, cutting fluids, glycerin, etc.) are present, use a NIOSH type R or P filter. For emergencies or instances where the exposure levels are not known, use a full-face positive-pressure, air-supplied respirator. WARNING: Air-purifying respirators do not protect workers in oxygen-deficient atmospheres.
Skin Protection: Wear impervious protective clothing, including boots, gloves, lab coat, apron or coveralls, as appropriate, to prevent skin contact.
Eye Protection: Use chemical safety goggles and/or full face shield where dusting or splashing of solutions is possible. Maintain eye wash fountain and quick-drench facilities in work area.

9. Physical and Chemical Properties

Appearance: Phthalic Anhydride is white to off-white flakes, granules, crystals, powder.
Odor: Faint odor.
Solubility: Slightly soluble in water.
Density: 1.590 @ 20C/4C
pH: -.
% Volatiles by volume @ 21C (70F): 0
Boiling Point: 284-286C.
Melting Point: It is melting at 130-133C.
Vapor Density (Air=1): 5.7
Vapor Pressure (mm Hg): No information found.
Evaporation Rate (BuAc=1): No information found.
Molecular Weight: 148.13
Molecular Formula: C8H4O3

10. Stability and Reactivity

Stability: Phthalic Anhydride is stable under ordinary conditions of use and storage.
Hazardous Decomposition Products: Fumes with Carbon dioxide and carbon monoxide may form when heated to decomposition.
Hazardous Polymerization: Will not occur.
Incompatibilities: Heat, Strong oxidizers, sodium nitrate, sodium nitrite, nitric acid.
Conditions to Avoid: Heat, dusting and incompatibles.

11. Toxicological Information

Routes of Entry: Absorbed through skin. Dermal contact. Eye contact. Inhalation. Ingestion.
Oral, rat: LD50 = 1530 mg/kg;
Inhalation, rat: LC50 = >210 mg/m3/1H;
Oral, mouse: LD50 = 1500 mg/kg;
Skin, rabbit: LD50 = >10 gm/kg;
ACGIH: A4 - Not Classifiable as a Human Carcinogen
Epidemiology: No information available.
Teratogenicity: No information available.
Mutagenicity: No information available.
Carcinogenicity: No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC.

12. Ecological Information

Toxicity to fish: semi-static test LC50 - Danio rerio (zebra fish) - 560 mg/l - 7 d
Toxicity to daphnia and other aquatic invertebrates: Immobilization EC50 - Daphnia magna (Water flea) - > 640 mg/l - 48 h
Toxicity to algae: EC50 - Pseudokirchneriella subcapitata (green algae) - 60 - 350 mg/l - 96 h
Environmental Fate: Sufficient information is not available. When released into the soil, Phthalic Anhydride is expected to leach into groundwater. When released into the soil, this material is expected to biodegrade. When released into water, this material is expected to biodegrade. This material is not expected to significantly bio accumulate.
Results of PBT and vPvB assessment: This substance/mixture contains no components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.

13. Disposal Considerations

Whatever cannot be saved for recovery or recycling should be managed in an appropriate and approved waste disposal facility. Processing, use or contamination of this product may change the waste management options. State and local disposal regulations may differ from federal disposal regulations. Dispose of container and unused Phthalic Anhydride in accordance with legal requirements.

14. Transport Information

The product is no dangerous good in terms of the ADR/RID according to EU regulations or directives and the Austrian „Gefahrgutbeförderungsgesetz”. Contents of maleic anhydride or maleic acid below 0,05 % (w/w).
US DOT has Phthalic anhydride not classified as Class 8 Corrosive, if it contains not more than 0.05 percent maleic anhydride. Our product does not contain less than 0.05 percent maleic anhydride.
Land Transportation (ADR/RID) / Inland Waterway Transport (AND(R))
UN number: Not regulated as a hazardous material
Proper shipping name: PHTHALIC ANHYDRIDE
Marine Transport (IMDG)
UN number: Not regulated as a hazardous material
Proper shipping name: PHTHALIC ANHYDRIDE
Environmental Hazard: No
Air Transport (ICAO/IATA)
UN number: Not regulated as a hazardous material
Proper shipping name: PHTHALIC ANHYDRIDE

15. Regulatory Information

TSCA 8(b) inventory
: Phthalic Anhydride
OSHA: Hazardous by definition of Hazard Communication Standard (29 CFR 1910.1200).
Health & Safety Reporting List: None of the chemicals are on the Health & Safety Reporting List.
Chemical Test Rules: None of the chemicals in this product are under a Chemical Test Rule.
Section 12b: CAS# 85-44-9: 4/12b/4a
TSCA Significant New Use Rule: None of the chemicals in this material have a SNUR under TSCA.
Section 302 (RQ) CAS# 85-44-9: final RQ = 5000 pounds (2270 kg)
Section 302 (TPQ) None of the chemicals in this product have a TPQ.
SARA Codes CAS # 85-44-9: acute, chronic, reactive.
Section 313 This material contains Phthalic Anhydride (CAS# 85-44-9, 99%),which is subject to the reporting requirements of Section 313 of SARA Title III and 40 CFR Part 373.
Clean Air Act: CAS# 85-44-9 is listed as a hazardous air pollutant (HAP). This material does not contain any Class 1 Ozone depletors. This material does not contain any Class 2 Ozone depletors.
Clean Water Act: None of the chemicals in this product are listed as Hazardous Substances under the CWA. None of the chemicals in this product are listed as Priority Pollutants under the CWA. None of the chemicals in this product are listed as Toxic Pollutants under the CWA.
None of the chemicals in this product are considered highly hazardous by OSHA.
CAS# 85-44-9 can be found on the following state right to know lists: California, New Jersey, Florida, Pennsylvania, Minnesota, Massachusetts.
California No Significant Risk Level: None of the chemicals in this product are listed.
WGK (Water Danger/Protection): CAS# 85-44-9: 0
HMIS (Perceived): Health Hazard: 3; Fire Hazard: 1; Reactivity: 0; Personal Protection: j
NFPA (Perceived): Health: 3; Flammability: 1; Reactivity: 0

Canada WHMIS: CLASS D-2A: Material causing other toxic effects (VERY TOXIC). CLASS E: Corrosive solid.
CAS# 85-44-9 is listed on Canada's DSL List. CAS# 85-44-9 is listed on Canada's DSL List.
CAS# 85-44-9 is listed on Canada's Ingredient Disclosure List.

Section 16 - Additional Information

European/International Regulations European Labeling in Accordance with EC Directives:
H302 = Harmful if swallowed.
H315 = Causes Skin Irritation.
H317 = May cause an allergic skin reaction.
H318 = Causes serious eye damage
H334 = May cause allergy or asthma symptoms or breathing difficulties if inhaled.
H335 = May cause respiratory irritation
Xn Harmful
Xi Irritant
R22 Harmful if swallowed.
R36/37/38 Irritating to eyes, respiratory system and skin.

DISCLAIMER: The information and recommendations set forth herein (hereinafter "Information") are presented in good faith and believed correct as of the date hereof. It is compiled from various sources and it is not necessarily all inclusive nor fully adequate in every circumstance. In addition, these suggestions should not be confused with nor followed in violation of applicable laws, regulations, rules or insurance requirements applicable. This MSDS sheet is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person using this product. Individuals receiving the information must exercise their independent judgment in determining its appropriateness for a particular purpose.