Terephthalic acid CAS#100-21-0

CAS Number: 100-21-0
Chemical Formula: C8H6O4
Synonyms:

Kyselina terftalova
Terephthalic a
Terephthalic acid 98%

Appearance: White Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Terephthalic acid CAS#100-21-0

Terephthalic acid is a white crystalline solid. Soluble in alkaline solution, slightly soluble in hot ethanol, insoluble in water, ether, glacial acetic acid and chloroform, consequently up until around 1970 most crude terephthalic acid was converted to the dimethyl ester for purification. It sublimates when heated.Terephthalic acid is the organic compound with formula C6H4(COOH)2. This colourless solid is a commodity chemical, used principally as a precursor to the polyester PET, used to make clothing and plastic bottles. Several million tones are produced annually. It is one of three isomeric phthalic acids.

Terephthalic acid Chemical Properties

Melting point	>300 °C (lit.)
Boiling point	214.32°C (rough estimate)
density	1.58 g/cm3 at 25 °C
vapor pressure	<0.01 mm Hg ( 20 °C)
refractive index	1.5100 (estimate)
Fp	260°C
storage temp.	Sealed in dry,Room Temperature
solubility	15mg/l (experimental)
pka	3.51(at 25℃)
form	Crystalline Powder
color	White
PH	3.36(1 mM solution);2.79(10 mM solution);2.26(100 mM solution)
Water Solubility	slightly soluble in water (0,017 g/L at 25°C)
Merck	14,9162
BRN	1909333
Exposure limits	ACGIH: TWA 10 mg/m3
Dielectric constant	1.5（Ambient）
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents.
Cosmetics Ingredients Functions	NOT REPORTED
LogP	2 at 25℃
CAS DataBase Reference	100-21-0(CAS DataBase Reference)
EPA Substance Registry System	Terephthalic acid (100-21-0)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
WGK Germany	3
RTECS	WZ0875000
Autoignition Temperature	925 °F
TSCA	TSCA listed
HS Code	2917 36 00
Hazardous Substances Data	100-21-0(Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: > 6400 mg/kg

Product Application of Terephthalic acid CAS#100-21-0

1,4-benzenedicarboxylic acid is mainly used for the production of poly (ethylene terephthalate). Also production of plasticizer dioctyl phthalate (DOTP) and polyester plasticized agents. 1,4-benzenedicarboxylic acid and polyhydric alcohols have a condensation reaction withd iethylene glycol, triethylene glycol, glycerol, propylene glycol, butylene glycol, etc. preparation of the polyester plasticizer.Terephthalic acid (TPA) is a benzenepolycarboxylic acid with potential anti-hemorrhagic properties. It is a high-tonnage chemical, widely used in the production of synthetic materials, notably polyester fibers (poly-(ethylene terephthalate)).

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