Cinnamic Acid is an aromatic organic acid containing a phenyl group and an unsaturated carboxylic acid moiety. The naturally occurring and commercially important form is generally trans-Cinnamic Acid, also known as (E)-3-Phenyl-2-propenoic acid or trans-3-Phenylacrylic Acid. It has the molecular formula C₉H₈O₂ and a molecular weight of 148.16 g/mol.
Cinnamic Acid is a specialty cosmetic ingredient associated with fragrance-related and formulation applications. Its aromatic structure makes it relevant to cosmetic raw-material systems where fragrance characteristics and specialized ingredient functionality are considered. The exact role depends on the formulation, concentration and intended application.
Cinnamic Acid is identified by CAS Number 140-10-3 and EC Number 205-398-1. Its molecular formula is C₉H₈O₂, with a molecular weight of 148.16 g/mol. The commercially important trans isomer has the E configuration around its carbon-carbon double bond.
Cinnamic Acid is generally supplied as a white to almost-white crystalline powder, crystals or crystalline material. Reference data place its melting point around 132–136°C, with a commonly reported value close to 135°C. It is practically insoluble in water but is soluble in organic solvents such as ethanol, methanol, acetone and ether.
Commercial grades can differ in purity and analytical methodology. For example, published supplier specifications report purity values such as ≥99.0% by HPLC or ≥99.8% by GC for specific grades. These values are supplier-specific and should not be represented as a universal cosmetic specification.
Cinnamic Acid is primarily relevant as a specialty aromatic ingredient in cosmetic and personal-care raw-material systems. Its chemical structure is related to naturally occurring cinnamate compounds found in cinnamon and other botanical sources.
The ingredient can be evaluated in fragrance-oriented formulations and other personal-care systems where aromatic organic acids are required. Cinnamic Acid should not automatically be described as a universal preservative merely because certain laboratory studies have examined antimicrobial properties. Its actual cosmetic function should be established according to the intended formulation and regulatory requirements.
The purity, isomeric composition and odor characteristics can be important considerations when Cinnamic Acid is selected for fragrance or other specialty applications.
Cinnamic Acid Cosmetic Ingredient can be considered for fragrance-related formulations, personal-care products, specialty cosmetic formulations and raw-material systems requiring an aromatic organic acid.
Its aromatic chemical structure makes it relevant to fragrance development and related ingredient systems. It can also serve as a chemical building block or intermediate for the development of other specialty ingredients, although such applications are distinct from its direct use as a cosmetic ingredient.
When incorporated into a finished cosmetic formulation, the formulator should evaluate compatibility with solvents, emulsifiers, oils, active ingredients and other components. Concentration should be established through formulation testing rather than applying a generic use level.
Cinnamic Acid has low water solubility, so formulation developers should carefully consider the selected solvent system and the physical form of the finished product. Organic solvents or suitable solubilization approaches may be required depending on the formulation.
Quality-control testing can include identification, assay, melting point, moisture, residue, elemental impurities and chromatographic purity. Analytical method selection is important because published commercial specifications use different methods, including HPLC, GC and titrimetric or other analytical techniques.
For example, a commercial analytical grade may specify ≥99.0% assay by HPLC, while another reference grade specifies ≥99.8% purity by GC. These should be treated as individual product specifications rather than combined into a single universal standard.
Cinnamic Acid is a specialty raw material that can support fragrance-oriented and other cosmetic formulation requirements. A reliable Cinnamic Acid Cosmetic Ingredient Manufacturer in India can provide material with defined chemical identity, purity and physical characteristics appropriate to the selected grade.
As a Cinnamic Acid manufacturer and supplier in India, Swapnroop can support bulk requirements for cosmetic raw materials and specialty ingredients. Product specifications can be aligned with the intended application, analytical requirements and customer quality expectations.
For procurement and formulation teams, maintaining a clearly defined specification is particularly important for Cinnamic Acid because commercial materials can differ in analytical method, purity level and physical characteristics.
| Parameter | Specification |
|---|---|
| Appearance | White or colourless crystals / white powder |
| Assay (HPLC) | ≥99.8% |
| Loss on Drying | NMT 1.0% |
| Total Impurities | NMT 1.0% |
| Water Content | NMT 1.0% |
| Melting Point | 132–136°C |