Octadecanedioic acid

Basic Information

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CAS Number

871-70-5

Molecular Formula

C18H34O4

Molecular Weight

314.47 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Surfactants Anionic Surfactants

Basic Physical Properties

Melting Point

124.0 to 127.0 deg-C

Boiling Point

480.9°C at 760 mmHg

Density

0.998 g/cm3

Flash Point

258.8ºC

SMILES

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C(CCCCCCCCC(=O)O)CCCCCCCC(=O)O

InChI

InChI=1S/C18H34O4/c19-17(20)15-13-11-9-7-5-3-1-2-4-6-8-10-12-14-16-18(21)22/h1-16H2,(H,19,20)(H,21,22)

InChIKey

BNJOQKFENDDGSC-UHFFFAOYSA-N

LogP

5.397200000000004

Topological Polar Surface Area

74.6 Å²

Hydrogen Bond Donor/Acceptor

2 / 4

Complexity

248

Safety Information

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Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

Synonyms & References

English

Octadecanedioic acid
1,16-Hexadecanedicarboxylic Acid

MDL Number

MFCD00142369

FAQ

What is Octadecanedioic acid (CAS: 871-70-5)?

Octadecanedioic acid, also known as stearic acid, is a saturated fatty acid with the chemical formula C18H36O2. It is a white, waxy solid at room temperature and is commonly used as a lubricant, emulsifier, and thickener in various industries. With a high melting point, it is stable under normal conditions and has a long history of application in cosmetics, food, and pharmaceuticals.

What are the main uses of Octadecanedioic acid (CAS: 871-70-5)?

Octadecanedioic acid is widely used in the food industry as a stabilizer and emulsifier, in pharmaceuticals for drug formulation, and in cosmetics as a preservative and texture enhancer. It also serves as a raw material in the production of soaps, plastics, and coatings. Additionally, it is utilized in research for studying lipid metabolism and as a model compound for organic chemistry applications.

Is Octadecanedioic acid (CAS: 871-70-5) safe?

Octadecanedioic acid is generally considered safe when handled properly. It is non-toxic in normal use but should be treated with care to avoid skin contact and inhalation. In industrial settings, appropriate safety measures such as gloves and ventilation are recommended. It complies with food-grade safety standards when used within regulated limits.

How should Octadecanedioic acid (CAS: 871-70-5) be stored?

Octadecanedioic acid should be stored in a cool, dry, and well-ventilated area away from direct light. It is best kept in a sealed, airtight container to prevent moisture absorption. Due to its stability, it does not degrade easily, but proper storage ensures long shelf life and maintains its chemical integrity.