Molekula
tert-Butylphenyl diphenyl phosphate
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
tert-Butylphenyl diphenyl phosphate is a flame retardant and plasticizer commonly used in polymers, textiles, and electronics to improve fire resistance while maintaining flexibility. It is a non-halogenated organophosphate compound effective in reducing flammability without compromising material performance. CAS 56803-37-3, molecular formula C22H23O4P, molecular weight 382.3894. Store at ambient conditions. Signal word: Warning. Molekula supplies tert-Butylphenyl diphenyl phosphate 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.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 g — £280.00 per pack ex VAT · £336.00 inc. VAT
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Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Off white / white to pale yellow low melting solid or colourless to pale yellow liquid. |
| Purity | ≥ 95% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | -21 °C (pour point) |
| Water Solubility | 3.2 mg/L at 25 °C |
| Vapour Pressure | 1.4 × 10⁻⁶ mmHg at 25 °C |
| Refractive Index | 1.5179 |
| log P (octanol/water) | 5.12 |
Source: PubChem CID 158333 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 89989635 |
| CAS Number | 56803-37-3 |
| IUPAC Name | (2-tert-butylphenyl) diphenyl phosphate |
| Molecular Formula | C22H23O4P |
| Molecular Weight | 382.3894 |
| Exact Mass | 382.1334 |
| SMILES | CC(C)(C)C1=CC=CC=C1OP(=O)(OC2=CC=CC=C2)OC3=CC=CC=C3 |
| InChIKey | VDIFKDMFGPIVCQ-UHFFFAOYSA-N |
| InChI | InChI=1S/C22H23O4P/c1-22(2,3)20-16-10-11-17-21(20)26-27(23,24-18-12-6-4-7-13-18)25-19-14-8-5-9-15-19/h4-17H,1-3H3 |
| PubChem CID | 158333 |
| UN Number | UN3082 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29199030 |
| Tariff Code | 2919900090 |
Safety & GHS
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Health Hazard
GHS07
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Hazardous to the Environment
GHS09
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, 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
- 1-diphenoxyphosphoryloxy-2-tert-butyl-benzene
- 2-tert-Butylphenyl diphenyl phosphate
- BPDP
- DIPHENYL 2-TERT-BUTYLPHENYL PHOSPHATE
- DIPHENYL TERT-BUTYLPHENYL PHOSPHATE
- Phosphoric acid, (1,1-dimethylethyl)phenyl diphenyl ester
- Phosphoric acid, 2-(1,1-dimethylethyl)phenyl diphenyl ester
- T-BUTYLPHENYL DIPHENYL PHOSPHATE
- tert-Butylphenyl diphenyl phosphate - Technical grade
- VDIFKDMFGPIVCQ-UHFFFAOYSA-N
Frequently asked questions
What is tert-Butylphenyl diphenyl phosphate commonly used for?
It is primarily used as a flame retardant in plastics, coatings, and adhesives, particularly in polyurethane foams and polyesters.
What is the chemical formula and molecular weight of tert-Butylphenyl diphenyl phosphate?
The formula is **C22H23O4P**, and the molecular weight is **382.3894 g/mol**.
How should tert-Butylphenyl diphenyl phosphate be stored?
Store in a tightly sealed container at **ambient temperature**, away from heat, sparks, and open flames.
What purity grades are available for this product?
Molekula supplies this product in **technical grade** purity, suitable for industrial applications.
Can Molekula supply tert-Butylphenyl diphenyl phosphate in bulk quantities?
Yes, bulk quantities are available upon request—contact our sales team for custom packaging options.
What documentation is provided with an order of tert-Butylphenyl diphenyl phosphate?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation.
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.