Shipping to 128 countriesCOA and SDS with every lotQuotes within one business day
Bulk CASAccount
Other Organic Building Blocks

Irgafos P-EPQ

Reference StandardIn stock

Irgafos P-EPQ (CAS 38613-77-3) supplier Zemixal. Request a quote with price, lead time and documents. Packs from 10 mg. Catalogue no. ZX-010537.

Pack sizes
Irgafos P-EPQ chemical structure
CAS number38613-77-3
FormulaC68H92O4P2
Molar mass1035.4 g/mol
InChIKeyBEIOEBMXPVYLRY-UHFFFAOYSA-N
IUPAC name[4-[4-bis(2,4-ditert-butylphenoxy)phosphanylphenyl]phenyl]-bis(2,4-ditert-butylphenoxy)phosphane

About Irgafos P-EPQ

Zemixal supplies Irgafos P-EPQ within its pharma Intermediates & Building Blocks portfolio. For your records (Reference Standard), the material is defined by CAS 38613-77-3, formula C68H92O4P2 and molar mass 1035.4 g/mol.

Use cases we see most often

  • Organic synthesis
  • API synthesis

Safe handling

Hazard communication follows GHS (Warning: H332, H400 and H410). Our SDS lists exposure controls and first-aid measures.

Standard pack sizes are 10 mg, 25 mg, 50 mg, 100 mg and 250 mg, and custom quantities are quoted on request. Every shipment includes a batch certificate of analysis and a 16-section SDS. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Typical uses

  • Organic synthesis
  • API synthesis

Applications

Specifications and identifiers

Specifications of Irgafos P-EPQ
Product nameIrgafos P-EPQ
Catalogue numberZX-010537
CAS number38613-77-3
IUPAC name[4-[4-bis(2,4-ditert-butylphenoxy)phosphanylphenyl]phenyl]-bis(2,4-ditert-butylphenoxy)phosphane
Molecular formulaC68H92O4P2
Molar mass1035.4 g/mol
Exact mass1034.6471
GradeReference Standard
XLogP323.5
H-bond donors / acceptors0 / 4
Topological polar surface area36.9 Ų
InChIKeyBEIOEBMXPVYLRY-UHFFFAOYSA-N
SMILESCC(C)(C)C1=CC(=C(C=C1)OP(C2=CC=C(C=C2)C3=CC=C(C=C3)P(OC4=C(C=C(C=C4)C(C)(C)C)C(C)(C)C)OC5=C(C=C(C=C5)C(C)(C)C)C(C)(C)C)OC6=C(C=C(C=C6)C(C)(C)C)C(C)(C)C)C(C)(C)C
PubChem CID93207
SynonymsTetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite, Irganox P-EPQ, AO 110, Tetrakis(2,4-di-tert-butylphenyl-4,4'-biphenylylene-diphosphonite), Tetrakis(2,4-di-tert-butylphenyl) (1,1-biphenyl)-4,4'-diylbisphosphonite, tetrakis(2,4-di-tert-butylphenyl) [1,1-biphenyl]-4,4'-diylbisphosphonite, Tetrakis(2,4-di-tert-butylphenyl) [1,1'-biphenyl]-4,4'-diylbis(phosphonite), Irgafos PEPQ, tetrakis(2,4-di-tert-butylphenyl)[1,1'-biphenyl]-4,4'-diylbisphosphonite, Sandostab P-EPQ, Sandostab PEPQ, Irgaphos P-EPO

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful
GHS09 Hazardous to the environment
Hazardous to the environment

Signal word Warning

  • H332Harmful if inhaled
  • H400Very toxic to aquatic life
  • H410Very toxic to aquatic life with long lasting effects

Precautionary statements P261, P271, P273, P304 + P340, P317, P391, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Irgafos P-EPQ
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request
250 mgQuoted on request
500 mgQuoted on request
1 gQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Irgafos P-EPQ

Which CAS number identifies Irgafos P-EPQ?
Irgafos P-EPQ is registered under CAS 38613-77-3. You may also see it listed as Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite, Irganox P-EPQ, AO 110. Our catalogue number for this item is ZX-010537.
What are the formula and molar mass of Irgafos P-EPQ?
For Irgafos P-EPQ, its formula is C68H92O4P2 and its molar mass is 1035.4 g/mol. The systematic (IUPAC) name is [4-[4-bis(2,4-ditert-butylphenoxy)phosphanylphenyl]phenyl]-bis(2,4-ditert-butylphenoxy)phosphane. InChIKey BEIOEBMXPVYLRY-UHFFFAOYSA-N lets you match it in any structure database.
What grade and pack sizes are available for Irgafos P-EPQ?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg, 250 mg, 500 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Irgafos P-EPQ?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Irgafos P-EPQ to my country?
Yes. Because Irgafos P-EPQ is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

Have a list of compounds to price?

Paste up to 200 CAS numbers into Bulk CAS lookup, or send one enquiry for everything in your quote list. We reply with price, lead time and documents.

Compare 0 of 4Compare now