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Undecanedioic acid

CAS Number
1852-04-6
EC Number
217-440-6
Chemical Formula
C11H20O4
Molecular Weight
216.27 g/mol

Description

Undecanedioic acid (CAS 1852-04-6 ), also known as hendecanedioic acid, is an eleven-carbon aliphatic dicarboxylic acid used as a bifunctional building block across polymer chemistry and industrial formulation. Its two reactive carboxylic end groups make it a reliable monomer for synthesizing specialty polyamides, polyesters, and ester-based intermediates for various high-performance applications. In coatings and adhesives, it serves as a chain extender or crosslinker to tune flexibility, adhesion, and film durability in polyester and polyamide resin systems used in demanding environments. Lubricant formulators use it to produce diester and complex ester base fluids with improved thermal stability and low-temperature performance for high-specification metalworking and industrial oils. Personal care manufacturers incorporate it into emollients and rheology modifiers, where its ester derivatives contribute to skin-feel, emulsion stability, and texture in premium creams and lotions. In sealant and elastomer production, it functions as a reactive intermediate that adjusts chain length and mechanical properties in cured polymer networks to meet specific industrial requirements. Undecanedioic acid is supplied as a white crystalline powder or flake. Technical grade is the standard commercial form, with purity levels typically at 98% or higher for most industrial uses. High-purity grades are available for specialty polymer and personal care applications where tighter specifications are required to ensure the quality and consistency of the final chemical product. Contact us for supply of Undecanedioic acid Request Quote

Other Names (Synonyms)

1,9-Nonanedicarboxylic acid | 1,11-Undecanedioic acid | Hendecanedioic acid | Undecanedionic acid | Undecandioic acid | TCI-N 0333 | UNDECANOIC ACID

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point108-109.5 °C
Boiling Point156-160 °C @ Press: 5 Torr
Density1.1629 (rough estimate)
Appearancewhite to light yellow powder
ColorWhite to Off-White
FormSolid
Water Solubility5.10g/L(21 ºC)
Vapor Pressure10Pa at 20℃
Refractive Index1.4421 (estimate)
Log P2.8 at 25℃

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H315Causes skin irritation
H319Causes serious eye irritation

Precautionary Statements

P264Wash … thoroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P321Specific treatment (see … on this label).
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29171900
Storage Class11 - Combustible Solids
WGK (Germany)3