Molekula
2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid is a UV absorber and photostabilizer commonly used in cosmetics, plastics, and textiles to protect against ultraviolet light degradation. It is a water-soluble benzophenone derivative with strong UV-filtering properties. This chemical has a CAS number of 4065-45-6, a molecular formula of C14H12O6S, and a molecular weight of 308.31 g/mol. It is stored at ambient conditions and classified with a signal word of "Warning" for safety. Molekula supplies 2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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25 g — $58.70 per pack
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Specifications
| Property | Value |
|---|---|
| Appearance | White to Off-White Powder |
| Melting Point | ≥ 140.0°C |
| Heavy metals | ≤ 5ppm |
| Loss on Drying | ≤ 3.0% |
| Assay | ≥ 99.0% |
| UV Absorbance | At 285nm about 460min At 325nm about 290min |
| Identification (IR) | Conforms to Reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Light-tan powder |
| Melting Point | 145 °C |
| Water Solubility | 250 g/L at 25 °C |
| pKa | pKa1 = -2.4 |
Source: PubChem CID 19988 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 39486176 |
| CAS Number | 4065-45-6 |
| IUPAC Name | 5-benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid |
| EC Number | 223-772-2 |
| Molecular Formula | C14H12O6S |
| Molecular Weight | 308.31 |
| Exact Mass | 308.0355 |
| SMILES | COC1=C(C=C(C(=C1)O)C(=O)C2=CC=CC=C2)S(=O)(=O)O |
| InChIKey | CXVGEDCSTKKODG-UHFFFAOYSA-N |
| InChI | InChI=1S/C14H12O6S/c1-20-12-8-11(15)10(7-13(12)21(17,18)19)14(16)9-5-3-2-4-6-9/h2-8,15H,1H3,(H,17,18,19) |
| PubChem CID | 19988 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29147940 |
| Tariff Code | 2914790090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H303 May be harmful if swallowed
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
- P337+313 If eye irritation persists get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 5-Benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid
- Benzophenone-4
- Seesorb 101S
- Spectra-Sorb UV 284
- Sulisobenzona
- Sulisobenzone
- Sungard
- Syntase 230
- Uval
- Uvinul MS 40
Frequently asked questions
What is 2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid used for?
It is primarily used as a UV absorber in cosmetics, personal care products, and some industrial applications to protect formulations from UV degradation.
What is the chemical formula and molecular weight?
The formula is **C14H12O6S** with a molecular weight of **308.31 g/mol**.
How should this chemical be stored?
Store at **ambient temperature** in a cool, dry place, away from direct sunlight and incompatible materials.
What grades or purity levels are available for this product?
Molekula supplies this product in **technical grade** and **pharmaceutical/ cosmetic grade** (if applicable to your application).
Can Molekula supply this product in bulk quantities?
Yes, we can provide bulk quantities—please contact us for minimum order quantities (MOQs) and pricing.
What documentation comes with the order?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.