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DIPHENYL PHOSPHITE

Product Name
DIPHENYL PHOSPHITE
CAS No.
4712-55-4
Chemical Name
DIPHENYL PHOSPHITE
Synonyms
DIPHENYL PHOSPHONATE;DIPHENYL HYDROGEN PHOSPHITE;NSC 43786;Weston DPP;JADEADD DPP;Doverphos 213;Doverphos DPP;TRUELICHT DPP;Antioxidant DPP;DIPHENYL PHOSPHITE
CBNumber
CB0123925
Molecular Formula
C12H11O3P
Formula Weight
234.19
MOL File
4712-55-4.mol
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DIPHENYL PHOSPHITE Property

Melting point:
12 °C (lit.)
Boiling point:
218-219 °C/26 mmHg (lit.)
Density 
1.223 g/mL at 25 °C (lit.)
vapor density 
8.1 (vs air)
vapor pressure 
5 mm Hg ( 140 °C)
refractive index 
n20/D 1.558(lit.)
Flash point:
350 °F
storage temp. 
under inert gas (nitrogen or Argon) at 2-8°C
form 
Liquid
Specific Gravity
1.223
color 
Clear
BRN 
2051909
InChIKey
OGBPILLJZSJJRC-UHFFFAOYSA-N
LogP
2.4 at 25℃ and pH7
CAS DataBase Reference
4712-55-4(CAS DataBase Reference)
EPA Substance Registry System
Diphenyl phosphite (4712-55-4)
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Safety

Hazard Codes 
Xn
Risk Statements 
22-37/38-41
Safety Statements 
26-39
RIDADR 
1760
WGK Germany 
3
F 
21
HazardClass 
8
PackingGroup 
III
HS Code 
29209090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H318Causes serious eye damage

H335May cause respiratory irritation

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
D210803
Product name
Diphenyl phosphite
Packaging
100g
Price
$52.7
Updated
2025/07/31
Sigma-Aldrich
Product number
D210803
Product name
Diphenyl phosphite
Packaging
500g
Price
$81.1
Updated
2025/07/31
TCI Chemical
Product number
D0907
Product name
Diphenyl Phosphite (contains ca. 5% Phenol)
Purity
>75.0%(HPLC)
Packaging
25g
Price
$16
Updated
2025/07/31
TCI Chemical
Product number
D0907
Product name
Diphenyl Phosphite (contains ca. 5% Phenol)
Purity
>75.0%(HPLC)
Packaging
100g
Price
$28
Updated
2025/07/31
TCI Chemical
Product number
D0907
Product name
Diphenyl Phosphite (contains ca. 5% Phenol)
Purity
>75.0%(HPLC)
Packaging
500g
Price
$62
Updated
2025/07/31
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DIPHENYL PHOSPHITE Chemical Properties,Usage,Production

Chemical Properties

clear liquid

Uses

Diphenyl Phosphite is a reactant used in the synthesis of α-hydroxyphosphonates and α-hydroxyphosphinates for their antioxidant and antimicrobial activity.

Synthesis

2310-89-6

108-95-2

4712-55-4

In a three-necked round-bottomed flask equipped with a mechanical stirrer, a reflux condenser and a dropping funnel, the first P-O component (PIII-OH) is added under nitrogen protection. This P-O component (see column 5 of Table 1) may be selected from H3PO3, monoalkyl phosphite or mixtures thereof and may additionally comprise dialkyl phosphite. Subsequently, the first P-O component is heated to the temperature specified in column 11 of Table 1 (T° step a) for step a). Next, the second P-O component (see column 6 of Table 1) is added while maintaining the appropriate temperature. The mixture was allowed to react for the time indicated in column 13 of Table 1 (reaction time step a), followed by step b). The alcohol R1-OH (see column 3 of Table 1) is then added dropwise while maintaining the temperature specified in column 12 of Table 1 (T° step b). After the mixture was reacted for the time indicated in column 14 of Table 1 (reaction time b), it was cooled to room temperature and analyzed by 31P NMR.

Purification Methods

Diphenyl Phosphite can be purified by distillation. Best done in small batches since decomposition frequently occurs. Phenol can be substantially removed by heating at 150 °C at water pump vacuum.

References

[1] Patent: EP2581378, 2013, A1. Location in patent: Paragraph 0038; 0039; 0043

DIPHENYL PHOSPHITE Preparation Products And Raw materials

Raw materials

Preparation Products

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DIPHENYL PHOSPHITE Suppliers

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View Lastest Price from DIPHENYL PHOSPHITE manufacturers

Shaanxi Dideu New Materials Co. Ltd
Product
DIPHENYL PHOSPHITE 4712-55-4
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
98
Supply Ability
10000KGS
Release date
2025-11-19
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
Product
DIPHENYL PHOSPHITE 4712-55-4
Price
US $2.20-8.80/kg
Min. Order
1kg
Purity
99%min
Supply Ability
1000kg
Release date
2025-09-08
Shaanxi Dideu Medichem Co. Ltd
Product
Z-Glu-OMe 4712-55-4
Price
US $1.00-4.00/G
Min. Order
1G
Purity
99%
Supply Ability
1KG
Release date
2025-05-19

4712-55-4, DIPHENYL PHOSPHITERelated Search:

Triphenyl phosphate Glycol sulfite Dimethyl phosphite Triethyl phosphite DI-N-PROPYL SULFITE DIAMYL SULFITE TETRAETHYL ETHYLENEDIPHOSPHONATE DIETHYL ETHYLIDENEMALONATE GLYOXAL SODIUM BISULFITE SODIUM PHOSPHITE-5-HYDRATE Monopotassium phosphite LINOLENIC ACID ETHYL ESTER PHOSPHOROUS ACID TRI-O-CRESYL ESTER Dibenzyl phosphite METHYL LINOLENATE Diisopropyl phosphite Phosphorous acid, bis(1-methylethyl) ester Dimethyl sulfite

  • Diphenyl phosphite, contains varying amounts of phenol and (C6H5O)3P
  • Phosphonic acid diphenyl
  • Phosphorous acid diphenyl
  • Diphenyl Phosphite (contains 5% Phenol at maximum)
  • Diphenyl Phosphonate Phosphonic Acid Diphenyl Ester Phosphorous Acid Diphenyl Ester
  • (contains 5% Phenol at MaxiMuM)
  • Diphenyl Phosphite&nbsp
  • Diphenyl phosphite, contains varying aMounts of phenol and (C6H5O)3P 5GR
  • NSC 43786
  • Diphenyl Phosphite (contains ca. 5% Phenol)
  • DIPHENYL PHOSPHITE
  • DIPHENYL PHOSPHONATE
  • DIPHENYL HYDROGEN PHOSPHITE
  • Diphenyl phosphite, contains varying amounts of phenol and (C6H5)3P
  • PHOSPHONIC ACID DIPHENYL ESTER
  • PHOSPHOROUS ACID DIPHENYL ESTER
  • Diphenoxyphosphine oxide
  • Doverphos 213
  • Doverphos DPP
  • Phenyl phosphonate ((PhO)2HPO)
  • Weston DPP
  • Diphenyl phosphite(Technical)
  • Diphenyl phosphite, 80%, for synthesis, contains 5% Phenol at maximum
  • Diphenyl Phosphite (contains 5% Phenol at maximum)&gt
  • TRUELICHT DPP
  • JADEADD DPP
  • TIANFU-CHEM CAS NO.4712-55-4 DIPHENYL PHOSPHITE
  • oxo(diphenoxy)phosphanium
  • Antioxidant DPP
  • Diphenyl Phosphite,contains 5% Phenol at maximum), ≥ 80.0%
  • Phosphite diphenylester
  • Diphenyl Phosphite (contains about 5% Phenol)
  • 4712-55-4
  • 4712-55-4-1
  • C6H5O2POH
  • C12H11O3P
  • Organic Building Blocks
  • Organic Phosphates/Phosphites
  • Phosphorus Compounds
  • Building Blocks
  • Organic Building Blocks
  • Organic Phosphates/Phosphites
  • Phosphorus Compounds