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Photo: Benzoin crystal  

  Gum Benzoin tonkinensis (Styrax), is a balsamic resin. Styrax Gum Benzoin tonkinensis is comming from Styrax family and the dried exudation from the pierced bark of Styrax Tree in Thailand.
As a gum from this species hardens, it becomes lump and pale yellowish color.
It is common to commercialized in powder form. It has a strong storax like odor and it also has more Benzoic Acid rather than Cinamic Acid (as found in Styrax tonkinensis). Because of its fragrant odor, it is widely used in: perfume, essential oil, aromatherapy, and sometimes in incense. It is well liked for its anti cataract and expectorant properties as well as its powerful skin healing effects.

 

Photo: Benzoin Styrax tonkinensis

English name: Benzoin
Botanical name: Styrax tonkinensis
Family name: Styraceae
Distribution: Indochina

Cas: 9000-72-0
.
Technical Analysis:
Optical +0.80 +0.79
Index Bias 1.4021 1.4022
Solubility Alcohol 95% (%) 89.88 89.85
Saponification Number 163.42 166.83
Acid Number 81.28 81.56
Benzoic Acid Ester 82.14 85.27
Cinamic Acid (%) 0.26 0.30
Benzoic Acid (%) 31.50 44.30
 

Photo: Benzoin Latex Properties:
Molecular formula C14H12O2
Molar mass 212.24 g mol−1
Appearance off-white crystals
Density 1.31 g/cm3
Melting point 132–137 °C
Boiling point 344 °C
Solubility in water Slightly Soluble
Solubility in Chlorine Soluble

Benzoic Acid [65-85-0]:Synonyms:Benzenecarboxylic Acid; benzeneformic acid; benzenemethonic acid; Benzoic acid; Benzoic acid? Diacylic acid; Carboxybenzene; Oracylic acid; phenyl carboxylic acid; phenylformic acid; retarded ba; retardex; tennplas;
Formula: C7 H6O2. Molecular Weight:122.1232 CAS RN:65-85-0 ACX Number:X1001262-5. Melting Point:122.4. Density:1.08. Vapor Density:4.2. Boiling Point:249. Flashing Point:121. Water Solubility:Slightly soluble. 0.34 g/100 mL RTECS:DG0875000.

 

PACKING: Poly or Jute bag 5 & 25kg or Metal drum

 

 

Photo: Benzoin board

 

All herbs

Adenosma indianum - Aegle marmelos Correa - Aganosma marginata - Adenosma indianum - Allium satium - Allium tuberosum - Aleo vera - Alpinia galanga - Alpinia officinarum - Alstonia scholaris - Amomum krervanh - Andrographis paniculata - Arachis hypogaea - Boesenbergia pandurata - Bridelia burmanica - Canaga odorata - Capsicum annuum - Capsicum frutescens - Carica papaya - Carthamus tinctorius  - Cassia angustifolia - Cassia tora - Centella asiatica - Cinnamomum cassia - Clitoria ternatea - Coriandrum sativum - Curcuma Longa - Cymbopogon citratus - Eclipta prostrata - Elettaria cardamomum - Equisetum arvense  - Ganoderma lucidum - Ginkgo biloba - Glycine max - Hibiscus rosa-sinensis - Illicium verum - Jasmine - Lycium barbarum - Medicago sativa - Momordica charantia - Morinda officinalis - Moringa oliefera - Myristica fragrans - Nelumbo nucifera - Ocymum basilicum - Panax ginseng - Perilla frutescens - Phaseolus vulgaris - Phyllanthus emblica - Piper nigrum - Plumeria alba - Plantago ovata - Ricinus - Sesamum indicum - Styrax tonkinense - Sassafras - Terminalia chebula  - Tribulus terrestris  - Zingiber officinale

Resources:
- Lavit KHAM  B.Sc (Chemistry),B.Pharm, MPS,MAACP, MNHAA
Medicinal Plants of Cambodia Habitat, Chemical constituents and Ethno botanical Uses
Bendigo Scientific Press  – ISBN 0-646-43703-8  / 9780646437033
- Somanith BOUAMANIVONG & Onvilay SOURIYA – Ministry of Health, Traditional Medicine Research Center, Editor Prof. Dr. Bouhong SOUTHAVONG, Vientiane 2005.
- Lily, M. PERRY. Medicinal Plants of East and Southeast Asia, London, England 1978
- WHO Regional Publications, Western Pacific Series No 2
- Jules VIDAL, Noms vernaculaires de plantes (LAO, MEO, KHA) 1959
- Medicinal Plants in China 1989
- C. Pierce SALGUERO – A Thai Herbal, Traditional Recipes for Health and Harmony, 2005
Silkworm Books www.silkwormbooks.info  – ISBN 974-9575-74-1 

Acknowledgements:
- Dr. Sabine WILKINS Plant Physiology & Dr. Pauline Mc CABE Naturopathy, La Trobe University, Melbourne, Victoria Australia.
-
Prof. Roger KING, Pharmacology Toxicology, Monash University, Australia.
-
Chea SOK MENG, Cambodian pharmacist
-
Prof, Ka SUNBAUNAT Cambodian psychiatrist, Vice Dean, Faculty of Medicine, Phnom Penh.

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