Description

1,2,3,4-Butanetetracarboxylic Acid, Tetrakis(1,2,2,6,6-Pentamethyl-4-Piperidinyl)Ester is a high-performance hindered amine light stabilizer (HALS) derived from a polycarboxylic acid. This compound is critically important for its exceptional ability to protect polymers from degradation caused by ultraviolet (UV) light and thermal oxidation. It is primarily needed by manufacturers in the plastics, coatings, and synthetic fibers industries seeking to enhance the durability and longevity of their products under demanding environmental conditions.

Application

• As a highly effective light stabilizer in polyolefins such as polypropylene (PP) and polyethylene (PE).
• For UV protection in automotive coatings, industrial paints, and wood finishes to prevent gloss loss and chalking.
• Enhancing the weathering resistance of engineering plastics used in outdoor applications and construction materials.
• As a stabilizing additive in synthetic fibers and textiles to prevent strength loss from sunlight exposure.
• In agricultural films to extend service life by protecting against solar radiation.
• For thermal stabilization in polymers processed at high temperatures.
• As a synergistic component in stabilization packages with antioxidants and UV absorbers.

Basic Information

Product Name	1,2,3,4-Butanetetracarboxylic Acid, Tetrakis(1,2,2,6,6-Pentamethyl-4-Piperidinyl)Ester
CAS No.	91788-83-9
Molecular Formula	C52H92N4O8
Molecular Weight	877.3 g/mol
Synonyms	BTETP; Tetrakis(1,2,2,6,6-pentamethyl-4-piperidyl) 1,2,3,4-butanetetracarboxylate; 1,2,3,4-Butanetetracarboxylic acid tetrakis(2,2,6,6-tetramethyl-4-piperidinyl) ester (common misnomer); HALS derived from 1,2,3,4-butanetetracarboxylic acid; Light stabilizer 91788-83-9; Tetrakis(2,2,6,6-tetramethyl-4-piperidyl) butanetetracarboxylate; Polymeric hindered amine light stabilizer.
EINECS	Contact for details

Quality Control

Our production of 1,2,3,4-Butanetetracarboxylic Acid, Tetrakis(1,2,2,6,6-Pentamethyl-4-Piperidinyl)Ester adheres to a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with industry specifications. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with each shipment to guarantee traceability and meet the stringent requirements of our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.