Terephthalic acid (CAS 100-21-0) — formula C8H6O4, molecular weight 166.13; category fine chemicals.
Terephthalic acid (CAS 100-21-0) is a chemical raw material in the fine chemicals category. Its molecular formula C8H6O4 comprises 8 C, 6 H, 4 O atoms. Its molecular weight is about 166.13. Reported physicochemical data: melting point around 427 °C (sealed tube), LogP about log Kow = 2.00. As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 100-21-0 |
|---|---|
| Molecular Formula | C8H6O4 |
| Molecular Weight | 166.13 |
| Melting Point | 427 °C (sealed tube) |
| LogP | log Kow = 2.00 |
| Applications | wool processing and making plastic films and sheets, Also added to poultry feeds and to certain antibiotics to increase their effectiveness, Textiles (Fiber & Fabric Manufacturing), Farming (Feed Additives), Terephthalic acid /is/ ... used almost exclusively to produce saturated polyesters, Production of linear |
| Category | Fine Chemicals |
Documented applications: wool processing and making plastic films and sheets, Also added to poultry feeds and to certain antibiotics to increase their effectiveness, Textiles (Fiber & Fabric Manufacturing), Farming (Feed Additives), Terephthalic acid /is/ ... used almost exclusively to produce saturated polyesters, Production of linear.
Terephthalic acid is a high-value fine compound with CAS registry number 100-21-0 and molecular formula C8H6O4 (molecular weight 166.13), belonging to the fine chemicals segment of chemical raw materials.
CAS number: 100-21-0
Its molecular formula C8H6O4 comprises 8 C, 6 H, 4 O atoms.
Also known as: Terephthalic acid · 对苯二甲酸
Category: fine chemicals
The CAS registry number of Terephthalic acid is 100-21-0.
Molecular formula C8H6O4, molecular weight 166.13.
It is also registered under: Terephthalic acid, 对苯二甲酸.
Recorded applications: wool processing and making plastic films and sheets, Also added to poultry feeds and to certain antibiotics to increase their effectiveness, Textiles (Fiber & Fabric Manufacturing), Farming (Feed Additives), Terephthalic acid /is/ ... used almost exclusively to produce saturated polyesters, Production of linear.
Category: Fine Chemicals.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for Terephthalic acid (CAS 100-21-0), compiled from public chemistry databases.
| CAS Registry Number | 100-21-0 |
|---|---|
| PubChem CID | 7489 |
| Molecular formula | C8H6O4 |
| IUPAC name | terephthalic acid |
| UNII (FDA) | 6S7NKZ40BQ |
| Molecular Weight | 166.13 |
|---|---|
| XLogP3 | 2 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 2 |
| Exact Mass | 166.02660867 |
| Monoisotopic Mass | 166.02660867 |
| Topological Polar Surface Area | 74.6 |
| Heavy Atom Count | 12 |
| Melting Point | 427 °C (sealed tube) |
|---|---|
| Melting Point | > 300 °C |
| Flash Point | 260 °C |
| Flash Point | 500 °F (260 °C) (Open cup) |
| Solubility | In water, 15 mg/L at 20 °C |
| Solubility | 0.015 mg/mL at 20 °C |
| Density | 1.51 |
| Density | 1.51 @25 °C |
| Vapor Pressure | 0.0000092 [mmHg] |
| LogP | log Kow = 2.00 |
TEREPHTHALIC ACID; 100-21-0; p-Phthalic acid; 1,4-Benzenedicarboxylic acid; benzene-1,4-dicarboxylic acid; p-Dicarboxybenzene; 1,4-dicarboxybenzene; Acide terephtalique; p-Benzenedicarboxylic acid; p-Carboxybenzoic acid; Tephthol; para-Phthalic acid; Kyselina tereftalova; 4-Carboxybenzoic Acid; TA-33MP; WR 16262
| Regulatory & Food Contact | FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS |
|---|---|
| GHS notification summary | 82.5% (1040 / 1260) |
| GHS notification summary | 82.5% (1040 / 1260) |
|---|---|
| Reported hazard statements | H315 (17.4%), H319 (17.1%), H335 (15.1%), H320, H372, H302, H316, H361 |
This chemical does not meet GHS hazard criteria for 82.5% (1040 of 1260) of all reports.
H315 (17.4%): Causes skin irritation [Warning Skin corrosion/irritation]
Terephthalic acid · CAS 100-21-0 · C8H6O4. UNII 6S7NKZ40BQ. Melting Point: 427 °C (sealed tube); Melting Point: > 300 °C; Flash Point: 260 °C.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 对苯二甲酸