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Alcohols & Glycols

alpha-terpineol

CAS: 98-55-5

Overview

Alpha-terpineol (CAS 98-55-5 ), also known commercially as Terpineol, is a naturally derived monocyclic monoterpene alcohol used as a fragrance ingredient, flavor component, and solvent carrier across personal care and pharmaceutical manufacturing.

FEMA 3045 status confirms its recognized use in flavoring applications. Its clean, floral-lilac scent profile drives demand in both functional and aesthetic formulations across various industrial sectors.

In personal care, alpha-terpineol is incorporated into perfumes, soaps, lotions, and hair care products where it contributes a fresh, floral character while also enhancing the penetration of active ingredients through the skin.

Fragrance compounders use it as a building block for lily-of-the-valley and lilac accords in fine fragrance and household product lines. Pharmaceutical formulators rely on it as a solvent and carrier to improve delivery.

This compound helps the dispersibility of active compounds in topical preparations. In flavor applications, it appears in food and beverage systems at low use levels to impart subtle floral-citrus notes to the final product.

Alpha-terpineol is supplied as a colorless to pale yellow liquid. It is available in fragrance-grade and food-grade specifications, with food-grade material conforming to FCC standards for safety and purity.

Bulk supply is standard in drums and IBCs, with smaller packaging available for laboratory and development use. This ensures that both large-scale manufacturers and research facilities can access the material they need.

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Physical Properties

Melting Point35-40 °C
Boiling Point218-221 °C @ Press: 764 Torr
Density0.935 g/cm³ @ Temp: 20 °C
Flash Point90 °C
Appearanceclear colorless to slightly yellow liquid
ColorClear colorless
Odorat 100.00 %. pine terpene lilac citrus woody floral
FormLiquid After Melting
Water Solubilitynegligible
Vapor Pressure6.48Pa at 23℃
Refractive Index1.482-1.485
Log P2.6 at 30℃

Safety & Handling

Warning GHS07 Hazard Statements H227 Combustible liquid H315 Causes skin irritation H319 Causes serious eye irritation H335 May cause respiratory irritation Precautionary Statements P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P403 Store in a well-ventilated place. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P370+P378 Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29061400
UN Number1230
Packing GroupII
Storage Class10 - Combustible liquids
WGK (Germany)1

Other Names

Terpineol schlechthin | Terpenol | Lily of valley | L-alpha-Terpineol | alphaalpha4-trimethyl-3-cyclohexene-1-methanol | alpha-Terpinol | alpha-Terpineole | alpha-Terpinenol

Related Products

Chemical Properties

CAS Number
98-55-5
EC Number
202-680-6
Mol. Weight
154.25
HS Code
29061400

Industries

Documentation