2,2'-Dihydroxy-3,3',5,5' tetra tert butyl biphenyl | Tert Butyl Biphenyl (TBBP)

1. STRUCTURE
2,2'-Dihydroxy-3,3',5,5' tetra tert butyl biphenyl
2. PRODUCT NAME & DETAILS
Product Name 2,2'-Dihydroxy-3,3',5,5' tetra tert butyl biphenyl
Product Code 001376
CAS No 6390-69-8
HS Code 6390-69-8
Molecular Formula C28H4202
Molecular Wt. 410.63
3. REGULATORY INFORMATION
Chemical nameCommon names and synonymsCAS numberEC number
3,3',5,5'-Tetra-tert -butylbiphenyl-2,2'-diol
3,3',5,5'-Tetra-tert-butylbiphenyl -2,2'-diol
6390-69-8
407-920-5
European Inventory of Existing Commercial Chemical Substances (EINECS)
Not Listed
EC Inventory
Listed
United States Toxic Substances Control Act (TSCA) Inventory
Listed
China Catalog of Hazardous chemicals 2015
Not Listed
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC)
Not Listed
Korea Existing Chemicals List (KECL)
Not Listed
Canadian Domestic Substance List (DSL)
Not Listed
Canadian Non-Domestic Substance List (NDSL)
Listed
Japanese Existing and New Chemical Substances Inventory (ENCS)
Not Listed
4. SPECIFICATION
Physical AppearanceWhite To Off White Powder
Volatiles Content
NMT 0.50%
Water Content (KF)
NMT 0.30%
Purity By GC
NLT 99.0%
Chloride Content
NMT 50 PPM
Residual 2 4-DTBP (GC)
NMT 0.50%
5. APPLICATION- This is used as intermediate to manufacture Phosphite anti oxidants.


- These anti oxidants has very high efficiency to retard the thermal degradation of the plastics and polymers at high process temperature.
6. HAZARD CLASSIFICATION
Non Hazardous material.
              Irritant
7. ANNUAL CAPACITY
120 MT
8. STORAGE CONDITION
Store in closed container at ambient temperature. Avoid direct sunlight.
9. PACKING DETAILS

500 Kg Big bag

10. SHELF LIFE
3 years.


Disclaimer
Typical properties should not be considered as specification.
Product covered by valid patents are not offered or supplied for commercial use. The Patent position should be verified by the customer.
Products will not be supplied to countries where they could be in conflict with existing patents.
Products currently covered by valid US patents are offered for R&D use in accordance with 35 USC 271 (e) (I) Above information is given in good faith and without warrenty.

The above information is given in good faith and is without warranty

Frequently Asked Questions

Q1: What is TBBP and what is it used for in the polymer industry?

A1: TBBP (C28H42O2, mol. wt. 410.63) is a high-purity (NLT 99.0% by GC) bisphenol intermediate used to manufacture phosphite antioxidants — a class of highly efficient thermal stabilizers that protect plastics and polymers from degradation during high-temperature processing.

Q2: How does TBBP differ from being a pharmaceutical intermediate versus a polymer additive intermediate?

A2: While listed under Sarex's pharmaceutical intermediates category on the website, TBBP's actual application is in producing phosphite-type antioxidant stabilizers for plastic and polymer thermal protection — making it a cross-category product relevant to both polymer additive and fine chemical buyers.

Q3: What purity and quality specification does TBBP meet?

A3: It meets purity by GC of NLT 99.0%, volatiles NMT 0.50%, water content NMT 0.30%, chloride NMT 50 ppm, and residual 2,4-di-tert-butylphenol (2,4-DTBP) NMT 0.50% — reflecting the high standard needed for downstream antioxidant synthesis.

Q4: What is the annual capacity and packaging for TBBP?

A4: Sarex produces TBBP at a substantial 120 MT annual capacity, reflecting strong demand. It's packed in 500 kg big bags, making it suitable for high-volume bulk supply to antioxidant manufacturers.

Q5: Is Sarex a trusted manufacturer and exporter of TBBP for global antioxidant producers?

A5: Yes, Sarex is a leading fine chemical manufacturer and exporter in India, producing TBBP at large scale (120 MT/year) and supplying it globally to polymer antioxidant manufacturers in more than 40 countries, with a 3-year shelf life and ambient storage.