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isostearic acid
heptadecanoic acid, 16-methyl-

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CAS Number: 2724-58-5Picture of molecule3D/inchi
ECHA EINECS - REACH Pre-Reg:220-336-3
XlogP3:7.20 (est)
Molecular Weight:284.48332000
Formula:C18 H36 O2
BioActivity Summary:listing
NMR Predictor:Predict (works with chrome, Edge or firefox)
CAS Number: 30399-84-9Picture of molecule3D/inchi
Other(deleted CASRN):126539-56-8
ECHA EINECS - REACH Pre-Reg:250-178-0
FDA UNII: X33R8U0062
Nikkaji Web:J1.379J
XlogP3:7.40 (est)
Molecular Weight:284.48332000
Formula:C18 H36 O2
NMR Predictor:Predict (works with chrome, Edge or firefox)
Category:cosmetic agents
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar:Search
Google Books:Search
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Google Patents:Search
US Patents:Search
EU Patents:Search
Pubchem Patents:Search
Physical Properties:
Appearance:white solid (est)
Assay: 95.00 to 100.00
Food Chemicals Codex Listed: No
Boiling Point: 400.00 to 401.00 °C. @ 760.00 mm Hg (est)
Flash Point: 438.00 °F. TCC ( 225.70 °C. ) (est)
logP (o/w): 7.674 (est)
Soluble in:
 water, 0.007116 mg/L @ 25 °C (est)
Organoleptic Properties:
Odor Strength:none
Odor Description:at 100.00 %. bland
Odor and/or flavor descriptions from others (if found).
Cosmetic Information:
CosIng:cosmetic data
Cosmetic Uses: binding agents
cleansing agents
surfactant - emulsifying
BOC Sciences
For experimental / research use only.
Isooctadecanoic acid
Prisorine™ 3505
Odor: bland
Use: An exceptionally mild liquid fatty acid that offers a light lubricious feel and can be used in many skin care and colour cosmetic applications. It also offers film forming properties, making it ideal for use in soaps, shaving foams and liquid cleansers.
Prisorine™ 3515
Odor: bland
Use: An easy spreading liquid fatty alcohol. Offers moisturising properties and a very light, silky, soft dry skin feel. Excellent liquidity and oxidation stability makes it perfect for use in skin care and colour cosmetics.
Foreverest Resources
Isostearic Acid
Odor: bland
Use: Isostearic acid is a lightly-branched, liquid fatty acid produced by the reaction of oleic acid with a natural mineral catalyst there is no chemical addition in this reaction, isostearic acid is based 100% on the parent oil or fat. Isostearic acid is used in applications which require a liquid fatty acid with exceptional stability: thermal stability in the case of a lubricant, odour stability for a cosmetic formulation, and oxidation stability for products with long shelf-life requirements. The branching structure of isostearic acid also enhances its dispersing power, and it is used in cosmetic and industrial applications for the stabilisation of pigments and mineral particles in oils and solvents.
Jarchem Industries
Jaric™ I-18CG
Jarchem Industries
Jaric™ I-18IG
Jarchem Industries
Jaric™ I-18LG
Odor: characteristic
Use: CENTURY® 1105 isostearic acid is a unique mixture of branched and straight-chain saturated C18 fatty acids. The high content of branched acids makes CENTURY® 1105 isostearic acid a liquid product, while the very low level of unsaturation results in excellent oxidative stability.
Odor: characteristic
Use: CENTURY® 1107 isostearic acid is a highly purified mixture of branched and straight chain C18 fatty acids. The low iodine number and high acid number content of CENTURY® 1107 is of particular value for more demanding applications, such as high-performance lubricant additives, personal care, and metalworking.
Lipo Chemicals
Liponate® ISA
Odor: characteristic
Use: Liponate® ISA is used as a lubricant and plasticizer. It has a light color, low odor and pleasant nontacky feel.
Oleo Solutions
Emersol 874
Odor: characteristic
Use: Cosmetics and Personal Care, Cleaning and Detergents
Santa Cruz Biotechnology
For experimental / research use only.
isoStearic Acid
Sigma-Aldrich: Sigma
For experimental / research use only.
isoStearic Acid ≥97% (capillary GC)
SysKem Chemie
isoStearic Acid
Safety Information:
Preferred SDS: View
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
oral-rat LDLo 64 mL/kg
Journal of the American College of Toxicology. Vol. 2(7), Pg. 61, 1983.

Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
Safety in Use Information:
cosmetic agents
Recommendation for isostearic acid usage levels up to:
 not for fragrance use.
Recommendation for isostearic acid flavor usage levels up to:
 not for flavor use.
Safety References:
EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA Substance Registry Services (TSCA):2724-58-5
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :21859
National Institute of Allergy and Infectious Diseases:Data
WGK Germany:nwg
16-methylheptadecanoic acid
RTECS:MI3875000 for cas# 2724-58-5
isooctadecanoic acid
 16-methylheptadecanoic acid
NIST Chemistry WebBook:Search Inchi
Canada Domestic Sub. List:2724-58-5
Pubchem (cid):21859
Pubchem (sid):135260060
 isooctadecanoic acid
NIST Chemistry WebBook:Search Inchi
Canada Domestic Sub. List:30399-84-9
Pubchem (cid):5281
Pubchem (sid):135017621
Other Information:
(IUPAC):Atomic Weights of the Elements 2011 (pdf)
Videos:The Periodic Table of Videos
tgsc:Atomic Weights use for this web site
(IUPAC):Periodic Table of the Elements
Golm Metabolome Database:Search
KEGG (GenomeNet):C01530
HMDB (The Human Metabolome Database):HMDB00827
•there are three types of stearic acid distinguished by average stearic acid concentration. these stearic acids, 37.5%, 42.5%, and 95.0%, have minimum stearic plus palmitic acid concentrations of 89.0%, 94.0%, and 97.5%, respectively. regular pharmaceutical grade stearic acid specifies a 40,0% minimum of either stearic or palmitic acid and a 90.0% minimum for their sum. purified pharmaceutical grade stearic acid specifies a 90.0% minimum stearic acid content and a 96.0% minimum for the sum. •saponified; distilled; single, double and triple-pressed; usp; fcc; 90% stearic with low oleic; grade free from chick edema factor; 99.8% pure •makes up 15-20% of some vanishing cremes and 3 wt% in opaque sunscreen lotions •2.6% of money maker oil; 2.7% of mobile oil; 2.9% of big z oil; 2.9% of randall oil; 3.0% of fesche oil; 2.5% of frotcher oil; 2.2% of stuart oil; 3.1% of curtis oil; 2.9% of van demar oil; 2.9% of sucess oil; 4.5% spanish 18-38-47 oil; 4.3% of north carolina 2 oil; 4.7% of virginia runner g-26 oil; 3.7% of spanette oil; 4.1% of georgia bunch 119-20 oil; 4.4% of virginia 56r oil; 3.1% of early runner oil; 3.7% of virginia bunch g2 oil; 4.1% of florigiant oil; 3.1% of dixie runner oil; 4.3% of florida 393-47 oil •several grades available commercially, varying in composition depending on the source and processing •shea butter and sunflower oil blends (ssobs), both of which contained approximately 50% stearic acid. ...[berry se et al; am j clin nutr 85 (6): 1486-94 (2007)] pubmed abstract
Potential Blenders and core components note
None Found
Potential Uses:
 binding agents
 emulsifying agents
Occurrence (nature, food, other):note
 not found in nature
 heptadecanoic acid, 16-methyl-
 jaric I-18CG
 jaric I-18IG
 jaric I-18LG
 liponate ISA
16-methyl heptadecanoic acid
16-methyl margaric acid
16-methylheptadecanoic acid
isooctadecanoic acid
 prisorine 3505
 prisorine 3515
Found in meats, liver and fats
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