Description

Ciba-Geigy Tinopal Abp-Z Liquid is a high-performance fluorescent whitening agent (FWA) belonging to the stilbene derivative class. Its primary function is to enhance the perceived whiteness and brightness of materials by absorbing ultraviolet light and re-emitting it as visible blue light. This product is essential for manufacturers in the textile, detergent, paper, and plastics industries seeking to achieve superior optical brightening effects. The compound is supplied as a liquid formulation for ease of handling and integration into various production processes.

Application

• Textile Finishing: Applied to cotton, polyester, and polyamide fibers to impart a brilliant white appearance and improve color vividness.
• Laundry Detergents & Fabric Softeners: A key additive in household and industrial detergents to compensate for fabric yellowing and maintain whiteness over multiple washes.
• Paper Manufacturing: Used in the production of high-quality writing, printing, and packaging papers to achieve a high degree of whiteness and opacity.
• Plastics and Polymers: Incorporated into synthetic fibers, films, and molded plastic articles to correct yellowness and enhance brightness.
• Soaps and Personal Care Products: Employed in certain cosmetic and soap formulations to improve aesthetic appeal.
• Coatings and Paints: Utilized in specific coating systems where optical brightening is required for a clean, bright finish.

Basic Information

Product Name	Ciba-Geigy Tinopal Abp-Z Liquid
CAS No.	98615-17-9
Molecular Formula	C40H44N12Na4O16S4
Molecular Weight	1229.1 g/mol
Synonyms	Tinopal ABP-Z; Fluorescent Brightener 351; 2,2'-(1,2-Ethenediyl)bis[5-[[4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]benzenesulfonic acid] tetrasodium salt; Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[[4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]-, tetrasodium salt; C.I. Fluorescent Brightener 351; FBA 351; Optical Brightener 351
EINECS	Contact for details

Quality Control

Our Tinopal Abp-Z Liquid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC assay for purity, spectrophotometric analysis for strength, and checks for viscosity and pH to ensure consistency and performance. We provide full traceability and Certificates of Analysis (COA) are available for all shipments to guarantee compliance with your specifications.

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). Keep away from heat sources and incompatible materials. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Clear to slightly opalescent yellowish liquid
Assay (HPLC)	≥ 95.0%
Strength (Spectrophotometry)	100 ± 3% of standard
pH (10% solution)	7.0 - 9.0
Viscosity (25°C)	Contact for details
Water Content	≤ 5.0%
Identification (IR)	Conforms to standard

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