Technical Data Sheet (TDS) – Rosemary Acid
Product Name: Rosemary Acid
Botanical Source: Rosmarinus officinalis L.
CAS Number: 537-15-5
Molecular Formula: C₁₄H₁₂O₈
Molecular Weight: 360.24 g/mol
Synonyms: Carnosic acid, 3,4-dihydroxycinnamic acid derivative
1. Product Description
Rosemary Acid is a naturally occurring polyphenolic compound extracted from rosemary leaves. It exhibits strong antioxidant, antimicrobial, and anti-inflammatory properties. It is widely used in the food, cosmetic, pharmaceutical, and chemical industries.
Food Grade: Complies with food additive regulations; suitable for supplements, beverages, and functional foods.
Industrial Grade: High purity for cosmetic formulations, pharmaceuticals, and research applications.
2. Physical & Chemical Properties
| Property | Specification |
|---|
| Appearance | Brownish-yellow powder |
| Odor & Taste | Characteristic, slightly bitter |
| Mesh Size | ≥ 98% pass 80 mesh |
| Moisture | ≤ 5.0% |
| Ash | ≤ 5.0% |
| Solubility | Soluble in ethanol, DMSO; slightly soluble in water |
| Melting Point | 150–155°C |
| pH (1% solution) | 4.5–6.0 |
3. Active Ingredient
| Component | Specification | Test Method |
|---|
| Rosemary Acid | ≥ 5.0% (food grade)
≥ 10% (industrial grade) | HPLC |
| Polyphenols | ≥ 15% | UV/Vis |
| Antioxidant Activity | DPPH ≥ 80% | In vitro assay |
4. Microbiological Limits (Food Grade)
| Test | Limit |
|---|
| Total Plate Count | ≤ 10,000 CFU/g |
| Yeast & Mold | ≤ 1,000 CFU/g |
| E. coli | Negative |
| Salmonella | Negative |
5. Heavy Metals
| Metal | Limit |
|---|
| Lead (Pb) | ≤ 2 ppm |
| Arsenic (As) | ≤ 2 ppm |
| Cadmium (Cd) | ≤ 1 ppm |
| Mercury (Hg) | ≤ 0.1 ppm |
6. Applications
Food Grade
Functional foods and beverages
Nutraceuticals and dietary supplements
Natural preservatives and antioxidants
Industrial Grade
Cosmetic products (creams, serums, lotions)
Pharmaceutical formulations (anti-inflammatory, antioxidant)
Research and chemical intermediates
7. Storage & Handling
Store in a cool, dry place, protected from light and moisture.
Keep container tightly closed when not in use.
Shelf Life: 24 months under recommended storage conditions.
8. Safety
Generally recognized as safe (GRAS) when used according to regulations.
Avoid contact with eyes and prolonged skin exposure.
Follow standard laboratory safety protocols when handling in industrial applications.
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