Physcion

CAS Number
521-61-9
EC Number
208-315-7
Chemical Formula
C16H12O5
Molecular Weight
284.26 g/mol

Description

Physcion (CAS 521-61-9), also known as Emodin 3-methyl ether, is a naturally derived anthraquinone pigment isolated from lichens, rhubarb, and related botanical sources. It functions as a colorant, antioxidant, and UV-stabilizing agent across cosmetic and industrial formulations. In personal care and cosmetics, it is incorporated into formulations where botanical-origin pigmentation is required.

This includes color cosmetics and skin-conditioning products where antioxidant activity is also beneficial. The textile and leather industries use it as a natural dye precursor for specific applications. Its anthraquinone chromophore delivers yellow-orange hues with reasonable substrate affinity. In printing and packaging, it contributes to natural ink systems and specialty colorant blends for sustainable lines.

Its UV-stabilizing function also positions it as a functional additive in surface coatings. This is particularly useful where photodegradation resistance is a primary formulation requirement for the end product. The material is supplied as a yellow to orange crystalline powder. It is available primarily in research and specialty chemical grades, with purity levels typically ranging from 95% to 98%+ as confirmed by HPLC.

Supply volumes suit pilot-scale and specialty formulation applications rather than bulk commodity procurement. This ensures high quality and consistency for technical and industrial manufacturing processes.

Other Names (Synonyms)

Physcione|Emodin 3-methyl ether|1,8-dihydroxy-3-methoxy-6-methylanthracene-9,10-dione|1,8-Dihydroxy-3-methoxy-6-methyl-9,10-anthracenedione|Parienin|Emodin monomethyl ether|H6PT94IV61|9,10-Anthracenedione, 1,8-dihydroxy-3-methoxy-6-methyl-

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

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Physical Properties

Melting Point 19634-19677 °C
Boiling Point 560.5±50.0 °C(Predicted)
Density 1.448±0.06 g/cm3(Predicted)
Color Yellow to Dark Yellow to Dark Orange
Form neat
Log P 5.078 (est)

Documentation

Safety & Handling Learn More

Warning
GHS07· Irritant

Hazard Statements

H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation

Precautionary Statements

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.

Trade & Regulatory

HS Code 29146990
Storage Class 11 - Combustible Solids
WGK (Germany) 3
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