Name: Terephthalic Acid CAS#100-21-0
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Terephthalic Acid CAS#100-21-0

Essential Industrial Raw Material ： Serves as a key feedstock for multiple large-scale organic chemical products.

High Purity and Stable Form：White needle-shaped crystals or powder suitable for diverse processing needs.

Wide Industrial Applications ：Extensively used in chemical fibers, light industry, electronics, and construction.

Key Polyester Component ：Critical for producing polyester fiber chips, bottle chips, and film chips.

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Product Description

Product Description-Terephthalic Acid CAS#100-21-0

Terephthalic acid (PTA) is a major bulk organic chemical feedstock. Appearing as white needle-shaped crystals or powder, it is soluble in alkaline solutions, slightly soluble in hot ethanol, and insoluble in water, ether, glacial acetic acid and chloroform. It is widely applied across sectors including chemical fibers, light industry, electronics and construction, with its core uses focused on polyester fiber chips, polyester fibers, bottle-grade chips and film-grade chips.

Product Applications-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.

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Product Data

Chemical Properties-Terephthalic Acid CAS#100-21-0

Product Name:	Terephthalic acid
Synonyms:	Acide terephtalique;acideterephtalique;acideterephtalique(french);Kyselina tereftalova;Kyselina terftalova;kyselinatereftalova;kyselinatereftalova(czech);nsc36973
CAS:	100-21-0
MF:	C8H6O4
MW:	166.13
EINECS:	202-830-0
Product Categories:	Pyridines;100-21-0;bc0001
Mol File:	100-21-0.mol
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)
form	Crystalline Powder
pka	3.51(at 25℃)
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
Henry's Law Constant	2.5×107 mol/(m3Pa) at 25℃, HSDB (2015)
Exposure limits	PC-TWA:8 mg/m3; PC-STEL:15 mg/m3
Dielectric constant	1.5(Ambient)
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents.
InChI	1S/C8H6O4/c9-7(10)5-1-2-6(4-3-5)8(11)12/h1-4H,(H,9,10)(H,11,12)
InChIKey	KKEYFWRCBNTPAC-UHFFFAOYSA-N
SMILES	OC(=O)c1ccc(cc1)C(O)=O
LogP	2 at 25℃
CAS DataBase Reference	100-21-0(CAS DataBase Reference)
EPA Substance Registry System	Terephthalic acid (100-21-0)

Safety Information-Terephthalic Acid CAS#100-21-0

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
Storage Class	11 - Combustible Solids
Hazardous Substances Data	100-21-0(Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: > 6400 mg/kg

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