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HomeProduct name listTetrachlorophthalic acid

Tetrachlorophthalic acid

  • CAS NO.:632-58-6
  • Empirical Formula: C8H2Cl4O4
  • Molecular Weight: 303.91
  • MDL number: MFCD00053309
  • EINECS: 211-181-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-06-08 17:06:38
Tetrachlorophthalic acid  Structural

What is Tetrachlorophthalic acid ?

Chemical properties

colourless crystals

The Uses of Tetrachlorophthalic acid

Dyes, intermediates.

General Description

Colorless plates.

Air & Water Reactions

Sparingly water soluble.

Reactivity Profile

A chlorinated organic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in Tetrachlorophthalic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions.

Fire Hazard

Flash point data for Tetrachlorophthalic acid are not available; Tetrachlorophthalic acid is probably combustible.

Properties of Tetrachlorophthalic acid

Melting point: 98°C
Boiling point: 418.21°C (rough estimate)
Density  1.8331 (rough estimate)
refractive index  1.5282 (estimate)
storage temp.  Sealed in dry,Room Temperature
solubility  soluble in Methanol
form  powder to crystal
pka 0.55±0.32(Predicted)
color  White
Water Solubility  Sparingly soluble
Stability: Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference 632-58-6(CAS DataBase Reference)
EPA Substance Registry System Tetrachlorophthalic acid (632-58-6)

Safety information for Tetrachlorophthalic acid

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
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.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Tetrachlorophthalic acid

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