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60895

Sigma-Aldrich

Gum rosin

natural resin

Synonym(s):

Colophony, Rosin, gum

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About This Item

CAS Number:
EC Number:
MDL number:
UNSPSC Code:
11121502
NACRES:
NA.22

form

solid

acid value

150‑170

solubility

chloroform: 0.1 g/mL, clear, slightly yellow to deep yellow

InChI

1S/C20H30O2/c1-13(2)14-6-8-16-15(12-14)7-9-17-19(16,3)10-5-11-20(17,4)18(21)22/h7,12-13,16-17H,5-6,8-11H2,1-4H3,(H,21,22)/t16-,17+,19+,20+/m0/s1

InChI key

RSWGJHLUYNHPMX-ONCXSQPRSA-N

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General description

Gum rosin is an exudate gum, which is extracted from pine trees. It consists of abiatic acid, palaustric acid and neoabetic acid.

Application

Gum rosin has been used:
  • for the preparation of testosome patches
  • to study its influence on the physical stability of concentrated oil in water emulsions
  • for the preparation of rosin nanoparticles containing hydrocortisone (HC)

Analysis Note

powder to solified mass or chunks, yellow to deep yellow

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Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

370.4 °F - closed cup

Flash Point(C)

188 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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In this work, a phenomenological study of the isomerisation and disproportionation of rosin acids using an industrial 5% Pd on charcoal catalyst from 200 to 240°C is carried out. Medium composition is determined by elemental microanalysis, GC-MS and GC-FID. Dehydrogenated

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