| Name | 2,3,5-Tricarboxycyclopentane-1-acetic acid |
| Alias | 2,3, acid;2,3, acid;3-(Carboxymethyl) cyclopentane-1,2,4-tricarboxylic acid;2-(Carboxymethyl) cyclopentane-1,3,4-tricarboxylic acid;1,2, ban acid, 3-(carboxymethyl)-; The number is 2,4-tricarbonsaeure, etc. Database: AK122918 MFCD23703095, DTXSID50474474 SCHEMBL143951, etc. |
| CAS No. | 24434-90-0 |
| EINECS number (EC No.) | 695-907-7 |
| chemical formula | C₁₀H₁₂O₈ |
| molecular weight | 260.20 (Accurate Mass 260.0532) |
| InChI | InChI = 1S/C10H12O8/c11-6 (12) 2-3-4 (8 (13) 14) 1-5 (9 (15) 16) 7 (3) 10 (17) 18/h3-5,7H,1-2H2,(H,11,12)(H,13,14)(H,15,16)(H,17,18)(Supplement: InChIKey RHRNYXVSZLSRRP-UHFFFAOYSA-N;SMILES C1C (C (C (C1C (= O) O) C (= O) O) CC (= O) O) C (= O) O |
| density | 1.650±0.06g/cm³(20°C, predicted) |
| boiling Point | 555.4±50.0 ℃ (predicted value) |
| flash Point | 303.7±26.6 ℃ (predicted value) |
| water-soluble | soluble in water, about 83g/L(25 ℃, calculated value); Soluble in polar organic solvents such as ethanol and DMF |
| refractive index | 1.577 (predicted) |
| storage conditions | cool, dry, well-ventilated place sealed preservation, away from light and moisture, away from heat and strong oxidant |
| appearance | white to off-white crystalline powder (solid) |
| specific Gravity | 1.65 (calculated value, consistent with density) |
| color | white to almost white |
| MDL No. | MFCD23703095 |
| dangerous Goods Signs | GHS05 Corrosion; GHS06 Acute Toxicity |
| risk Terms | H301 Harmful if swallowed; H311 Toxic in contact with skin; H331 Toxic if inhaled; H314 Severe skin burns and eye damage (Old version of R terminology not officially included) |
| safety terminology | p260, P280, P301 + P310, P303 + P361 + P353, P304 + P340, P305 + P351 + P338, P310, P403 + P233, P405, P501 |
| customs Number | 2917209090 (other cycloalkanes, cycloalkenes, cycloterpene polycarboxylic acids; regulatory conditions AB; MFN tariff is about 6.5 per cent, subject to the latest regulations of the General Administration of Customs) |
1.nature
Structural characteristics: cyclopentane skeleton, containing 4 carboxyl groups (1 acetic acid side chain +3 ring carboxyl groups), is a tetracarboxylic acid; hydrophilic molecule (LogP≈ -1.3), acidity coefficient pKa 3.90±0.70 (predicted value).
Physical state: white to off-white crystalline powder, melting point 225 ℃, boiling point about 555.4 ℃ (predicted), density 1.65g/cm³ (predicted).
Solubility: Soluble in water (about 83g/L,25 ℃), ethanol, DMF and other polar solvents.
Chemical activity: carboxylic acid-can form ester with alcohol and salt with alkali; heating or dehydrating agent such as acetic anhydride can be closed to generate anhydride; avoid mixing with strong alkali, strong oxidant and strong reducing agent.
Stereochemistry: There are many stereoisomers (such as 2β,3α,5β-type), and different configurations have an impact on the performance of downstream polyimide and other products.
2. uses
pharmaceutical intermediates: it belongs to the category of API intermediates and fine chemical intermediates.
Liquid crystal display (LCD) key raw materials: used for liquid crystal display alignment film polyimide resin, polyamide acid resin raw materials, is an important precursor to TFT-LCD the liquid crystal alignment film preparation route.
Anhydride derivatization: 3-carboxymethyl -1,2,4-cyclopentane tricarboxylic acid -1,4:2,3-dianhydride (CAS 6053-46-9) can be prepared with high yield (about 83%) by acetic anhydride dehydration and ring closure. The dianhydride is an important polyimide raw material and can also be used as adhesives.
Lubrication and electronic materials: its n-butyl alcohol ester can be used as a lubricant; Suppliers can provide 99.9% high purity specifications (metal ion control <1 ppm), suitable for electronic and semiconductor materials.
Optical alignment materials: Related patents (ROLIC AG, such as WO2004013086A1, US20140192305A1) relate to their applications in liquid crystal optical alignment materials and photoreactive compounds.
3. safety information
hazard Classification (GHS): Corrosion (GHS05)+ Acute Toxicity (GHS06).
Main hazards: Toxic by swallowing, skin contact and inhalation (H301/H311/H331); Severe burns to skin and eyes (H314).
Operation protection: wear protective gloves, protective goggles/face mask and protective clothing; the workplace shall be well ventilated to avoid dust generation and inhalation, and to avoid skin and eye contact.
Emergency treatment: seek medical treatment immediately after swallowing by mistake (P301 + P310); Skin contamination, remove contaminated clothes and rinse with a large amount of water (P303 + P361 + P353); When inhaling, move to fresh air and seek medical treatment (P304 + P340); Rinse with clear water for several minutes and seek medical treatment (P305 + P351 + P338).
Storage and transportation: sealed in a cool, dry and ventilated place, protected from light and moisture; Keep the container closed and locked for storage; Keep away from strong alkali and strong oxidant (P403 + P233, P405).
Regulations: China Customs Code 2917209090, Supervision Condition AB; The registration of dangerous goods transportation and hazardous chemicals shall be implemented according to local laws and regulations, and the latest official requirements shall prevail.
4. our production advantages and capacity
purity guarantee: regular specifications ≥ 98% ~ 99%(HPLC), 99.9 high purity specifications can be customized, and metal ion content can be controlled at <1 ppm.
Production capacity and supply: production capacity of 50 tons/year, standing spot, support 1kg small package to ton-level large goods, delivery period is stable.
Customized packaging: support 1kg/25kg/200kg/ton barrel and other packaging, can be customized packaging, accept sample trial.
Cost and service: large-scale production brings cost advantages, can undertake customized specifications and long-term supply agreements.
Post time: Sep-08-2026
