Dibutyl Phosphate

Description

Dibutyl Phosphate · CAS 107-66-4 · C8H19O4P. UNII 0072NN74TN. Boiling Point: 136 °C at 0.05 mm Hg; Boiling Point: 135-138 °C; Melting Point: 8.6 °F (ICSC, 2024).

Identification

CAS Registry Number	107-66-4
PubChem CID	7881
Molecular formula	C8H19O4P
IUPAC name	dibutyl hydrogen phosphate
UNII (FDA)	0072NN74TN

Computed Descriptors

Molecular Weight	210.21
XLogP3	1.5
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	8
Exact Mass	210.10209608
Monoisotopic Mass	210.10209608
Topological Polar Surface Area	55.8
Heavy Atom Count	13
Formal Charge	0

Physical & Chemical Properties

Boiling Point	136 °C at 0.05 mm Hg
Boiling Point	135-138 °C
Melting Point	8.6 °F (ICSC, 2024)
Melting Point	-13 °C
Flash Point	370 °F (ICSC, 2024)
Flash Point	188 °C o.c.
Solubility	18 g/L at 68 °F (ICSC, 2024)
Solubility	In water, 1.72X10+4 mg/L at 25 °C
Density	1.06 g/cu cm at 20 °C
Density	1.06

Physical description & handling notes

• Dibutyl phosphate is a pale-amber odorless liquid. Moderately soluble in water.
• Liquid
• Pale-amber, odorless liquid; [NIOSH]
• COLOURLESS LIQUID.
• Pale-amber, odorless liquid.
• Pale-amber liquid or oil

Regulatory Status

GHS notification summary	5.7% (53 / 930)

GHS Hazard Classification

GHS notification summary	5.7% (53 / 930)
Reported hazard statements	H314 (91.9%), H318 (68.4%), H351 (20%), H335, H303, H315, H319, H336

Documented Uses

• Used as an a catalyst and an antifoaming agent; [ACGIH] Used as a catalyst for resins and paints, a dielectric medium, a plasticizer (added to polymers to effect flexibility and/or toughness), a hydraulic fluid, and an antistatic in the textile industry; [HSDB]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• Plastic Composites Manufacturing [Category: Industry]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Organic catalyst and antifoaming agent
• Feedstock for chemical synthesis

Synonyms

DIBUTYL PHOSPHATE; Dibutyl hydrogen phosphate; 107-66-4; Di-n-butyl phosphate; Phosphoric acid, dibutyl ester; Dibutyl acid phosphate; DP 4 (coupling agent); Phosphoric acid dibutyl ester; Di-n-butyl hydrogen phosphate; DTXSID3040728; 0072NN74TN; DTXCID1020728; dibutyl acid o-phosphate; Dibutyl phosphoric acid; HDBP; RefChem:132944

Frequently Asked Questions

What are the CAS number and molecular formula of Dibutyl Phosphate?

CAS 107-66-4; molecular formula C8H19O4P; molecular weight — g/mol.

What other names is Dibutyl Phosphate known by?

DIBUTYL PHOSPHATE, Dibutyl hydrogen phosphate, 107-66-4, Di-n-butyl phosphate, Phosphoric acid, dibutyl ester, Dibutyl acid phosphate.

Is Dibutyl Phosphate classified as hazardous?

5.7% of GHS notifications report no hazard classification (53 of 930).

What are the key physical properties of Dibutyl Phosphate?

Boiling Point: 136 °C at 0.05 mm Hg; Boiling Point: 135-138 °C; Melting Point: 8.6 °F (ICSC, 2024); Melting Point: -13 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.