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Undecenoic acid

Undecenoic acid
Undecenoic acid structure
Chemical Name:
Undecenoic acid
DECLID;Desenex;Sevinon;Renselin;FEMA 3247;undecylenic;undec-10-enoic;Undecylensαure;10-Hendecenoic;desenexsolution
Molecular Formula:
Formula Weight:
MOL File:

Undecenoic acid Properties

Melting point:
23-25 °C(lit.)
Boiling point:
137 °C2 mm Hg(lit.)
0.912 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.449(lit.)
Flash point:
300 °F
storage temp. 
water: insoluble
Crystalline Low Melting Solid or Liquid
Colour Index 
Pale yellow
Specific Gravity
0.911 (25/25℃)
Water Solubility 
JECFA Number
CAS DataBase Reference
112-38-9(CAS DataBase Reference)
NIST Chemistry Reference
Undecylenic Acid(112-38-9)
EPA Substance Registry System
10-Undecenoic acid(112-38-9)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi
Risk Statements  36/37/38-52/53-36/38
Safety Statements  26-61-37/39-36
RIDADR  UN 3261 8/PG 2
WGK Germany  1
RTECS  YQ2975000
Autoignition Temperature 275 °C
HS Code  29161910
Toxicity LD50 in mice (g/kg): 8.15 orally; 0.960 i.p. (Newell)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H303 May be harmfulif swallowed Acute toxicity,oral Category 5 P312
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P337+P313 IF eye irritation persists: Get medical advice/attention.
P405 Store locked up.

Undecenoic acid price More Price(18)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 124672 10-Undecenoic acid 98% 112-38-9 100ml $21.6 2018-11-13 Buy
Sigma-Aldrich 124672 10-Undecenoic acid 98% 112-38-9 500ml $61.8 2018-11-13 Buy
TCI Chemical U0007 10-Undecenoic Acid >98.0%(GC)(T) 112-38-9 25g $14 2018-11-22 Buy
TCI Chemical U0007 10-Undecenoic Acid >98.0%(GC)(T) 112-38-9 400g $39 2018-11-22 Buy
Alfa Aesar A19122 10-Undecenoic acid, 99% 112-38-9 250g $30.2 2018-11-13 Buy

Undecenoic acid Chemical Properties,Uses,Production


Undecylenic acid (C11) or also called 10-undecenoic acid is an organic unsaturated fatty acid derived from castor oil by cracking. Undecylenic acid is an FDA approved active ingredient in medications for skin infections, and relieves itching, burning, and irritation. In technical applications it is used because if its antifungal properties.appearance (25°C) White or very pale yellow crystalline
mass or clear colourless pale
yellow liquid
acid value mg KOH/g 295 - 304
saponification mg KOH/g 295 - 304
iodine value) gI2/100g 132 - 136
congealing point °C 23 - 24
Purity by GC % min. 99%

Chemical Properties

Undecylenic acid is an organic unsaturated fatty acid derived from castor oil. It is the common name of 10-undecenoic acid, (CH2CH(CH2)8COOH). It is used in the manufacture of pharmaceuticals, cosmetics and perfumery, including antidandruff shampoos , antimicrobial powders and as a musk in perfumes and aromas. Undecylenic acid is produced by cracking of castor oil under pressure.

Chemical Properties

Light-colored liquid; fruity-rosy odor. Almost insoluble in water; miscible with alcohol, chloroform, ether, benzene, and fixed and volatile oils. Combustible.


Undecylenic acid can be used in silicon-based biosensors. Monolayers can be made on bare silicon transducer surfaces with the help of covalent bonds between silicon atom and the double bonds of undecylenic acid. The carboxylic acid groups remain available for the conjugation of biomolecules such as DNA or proteins.


  1. silicon-based biosensors
  2. natural fungicide
  3. chemical intermediate in fragrance and flavours
  4. cosmetics & personal care: highly effective natural antimicrobial and preservative properties
  5. undecylenic acids-based diols and polyols
  6. additive in cutting fluids (fungicide or as triethanolamine salt as rust inhibiting additive)


used as antifoaming and surface active agent. As its sulfo – succinate derivative it is used in anti-dandruff shampoos


ChEBI: An undecenoic acid having its double bond in the 10-position. It is derived from castor oil and is used for the treatment of skin problems.

Clinical Use

10-Undecenoic acid (Desenex, Cruex) obtained fromthe destructive distillation of castor oil. Undecylenic acidis a viscous yellow liquid. It is almost completely insolublein water but is soluble in alcohol and most organicsolvents.
Undecylenic acid is one of the better fatty acids for useas a fungicide, although cure rates are low. It can be used inconcentrations up to 10% in solutions, ointments, powders,and emulsions for topical administration. The preparationshould never be applied to mucous membranes because it isa severe irritant. Undecylenic acid has been one of theagents traditionally used for athlete’s foot (tinea pedis).Cure rates are low, however.

Purification Methods

Purify the acid by repeated fractional crystallisation from its melt or by distillation in a vacuum. [Beilstein 2 IV 1612.]

Undecenoic acid Preparation Products And Raw materials

Raw materials

Preparation Products

Undecenoic acid Suppliers

Global( 243)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21968 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20680 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32457 55
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 24001 58
Haihang Industry Co.,Ltd
+86 531 8582 1093 CHINA 4669 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930501651 CHINA 925 58
Hebei Chisure Biotechnology Co., Ltd.
+8613292893290 CHINA 1020 58
Kono Chem Co., Ltd
+86-132 8924 6953 CHINA 2144 58
career henan chemical co
+86-371-86658258 CHINA 19923 58
Shanghai TongYuan Chemical Co., Ltd. 021-69182866 69186366
021-69182022 China 5174 58

View Lastest Price from Undecenoic acid manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-07-23 Undecenoic acid
US $2500.00 / KG 100KG 98% 10ton career henan chemical co
2018-12-20 Undecenoic acid
US $10.00 / kg 1kg 99% 500ton/month Hebei Chisure Biotechnology Co., Ltd.

Undecenoic acid Spectrum

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