Octyl Methoxy Cinnamate

Description

Octyl Methoxy Cinnamate · CAS 83834-59-7 · C18H26O3. UNII 4Y5P7MUD51. Boiling Point: 388 to 392 °F at 3 mmHg (NTP, 1992); Boiling Point: 185-195°C at 1mbar; Boiling Point: 382 °C at 760 mm Hg.

Identification

CAS Registry Number	83834-59-7
PubChem CID	5355130
Molecular formula	C18H26O3
IUPAC name	2-ethylhexyl (E)-3-(4-methoxyphenyl)prop-2-enoate
UNII (FDA)	4Y5P7MUD51

Computed Descriptors

Molecular Weight	290.4
XLogP3	5.3
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	10
Exact Mass	290.18819469
Monoisotopic Mass	290.18819469
Topological Polar Surface Area	35.5
Heavy Atom Count	21
Formal Charge	0

Physical & Chemical Properties

Boiling Point	388 to 392 °F at 3 mmHg (NTP, 1992)
Boiling Point	185-195°C at 1mbar
Boiling Point	382 °C at 760 mm Hg
Melting Point	-25°C
Solubility	<0.1 g/100 mL at 27°C
Solubility	In water, 0.2 mg/L at 20 °C
Vapor Pressure	0.000014 [mmHg]
LogP	5.8
LogP	log Kow = 6.1

Physical description & handling notes

• 2-ethylhexyl p-methoxycinnamate is a colorless to pale yellow viscous liquid. (NTP, 1992)
• Liquid
• Colorless to pale yellow liquid; [CAMEO] Pale yellow liquid; [MSDSonline]
• Pale yellow liquid
• Colorless to light yellow viscous liquid
• Practically odorless

Regulatory Status

Regulatory & Food Contact	CIR / INCI: Uv filter; Uv absorber
GHS notification summary	92.2% (1853 / 2010)

GHS Hazard Classification

GHS notification summary	92.2% (1853 / 2010)
Reported hazard statements	H315 (20.1%), H319 (20.1%), H335 (20.1%), H411 (33.3%)

Documented Uses

• Used as ultraviolet sunscreen; [Merck Index]
• The most widely used sunscreen ingredient in the United States, octyl methoxycinnamate is thought to be the UVB filter in 90% of sun lotions
• Used as an ultraviolet absorber in US cosmetics.
• For more Uses (Complete) data for OCTINOXATE (6 total), please visit the HSDB record page.
• Cosmetics -> Uv filter; Uv absorber
• Information on 215 consumer products that contain Ethylhexyl Methoxycinnamate in the following categories is provided:

Synonyms

Octinoxate; Parsol MCX; Parsol MOX; Parsol; Octyl methoxycinnamate; 2-Ethylhexyl-p-methoxycinnamate; Escalol 557; Sunscreen AV; 2-Ethylhexyl p-methoxycinnamate; Ethylhexyl methoxycinnamate; 2-ethylhexyl (E)-3-(4-methoxyphenyl)prop-2-enoate; Uvinul MC80; Ethylhexyl p-methoxycinnamate; Neo heliopan AV; Eusolex 2292; octyl-methoxycinnamate

Frequently Asked Questions

What are the CAS number and molecular formula of Octyl Methoxy Cinnamate?

CAS 83834-59-7; molecular formula C18H26O3; molecular weight — g/mol.

What other names is Octyl Methoxy Cinnamate known by?

Octinoxate, Parsol MCX, Parsol MOX, Parsol, Octyl methoxycinnamate, 2-Ethylhexyl-p-methoxycinnamate.

What is the regulatory status of Octyl Methoxy Cinnamate?

Documented regulatory listings: CIR / INCI: Uv filter; Uv absorber.

Is Octyl Methoxy Cinnamate classified as hazardous?

92.2% of GHS notifications report no hazard classification (1853 of 2010).

What are the key physical properties of Octyl Methoxy Cinnamate?

Boiling Point: 388 to 392 °F at 3 mmHg (NTP, 1992); Boiling Point: 185-195°C at 1mbar; Boiling Point: 382 °C at 760 mm Hg; Melting Point: -25°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.