| CAS
NO. |
3209-13-0 |
|
| EINECS NO. |
221-716-1 |
| FORMULA |
C8H10O2 |
| MOL
WT. |
138.17 |
|
H.S.
CODE
|
|
|
TOXICITY
|
|
| SYNONYMS |
Phenol,
3-Methoxy-5-methyl; |
| SMILES |
|
|
CLASSIFICATION
|
|
|
GENERAL DESCRIPTION OF DIHYDROXYBENZENE |
|
There are three
isomeric compounds of dihydroxybenzene molecule structure, which all have
traditional names respectively. The ortho (1,2) isomer is called catechol (Also
known as catechin; pyrocatechol; pyrocatechuic acid), which forms clear crystals
used as a photographic developer in solution and as a starting material to
produce synthetic catecholamines which have important physiological effects as
neurotransmitters and hormonesany (such as epinephrine, adrenaline,
norepinephrine, and dopamine). The meta (1,3) isomer is resorcinol (also known
as resorcin), which forms clear needle crystals used in the production of diazo
dyes and plasticizers. It is produced by sulfonating benzene with fuming
sulfuric acid and fusing the resulting benzenedisulfonic acid with caustic soda.
Resorcinol is used in resins as an UV absorber. It is used in manufacturing
fluorescent and leather dyes and adhesives. Reaction with formaldehyde produces
resins (resorcinol formaldehyde resins) used to make rayon and nylon. It is used
as a pharmaceutical to treat acne and other greasy skin conditions in
combination with other acne treatments such as sulfur. It is used as an
anti-dandruff agent in shampoo and sunscreen cosmetics. It is also used as a
chemical intermediate to synthesis pharmaceuticals and other organic compounds.
The para (1,4) isomer is hydroquinone (also known as quinol), which forms clear
prisms used as a photographic reducer and developer (except in color film). It
is formed in large quantities by chemical reduction of benzoquinone. This
compound is a general-purpose inhibitor, stabilizer, antioxidant, and
intermediate. One of the major uses of hydroquinone is as an intermediate to make
other inhibitors, stabilizers, antioxidants, agricultural chemicals, and dyes.
Resorcinol and its derivatives are used in resins as UV absorbers. They are used
in manufacturing fluorescent and leather dyes and adhesives (resorcinol
formaldehyde resins). They are used as pharmaceuticals to treat acne and other
greasy skin conditions in combination with other acne treatments such as sulfur.
They are used as an anti-dandruff agent in shampoo and sunscreen cosmetics.
|
|
PHYSICAL AND CHEMICAL PROPERTIES
|
| PHYSICAL
STATE |
off-white crystals |
| MELTING POINT |
62
- 64 C
|
| BOILING
POINT |
|
| SPECIFIC GRAVITY |
|
| SOLUBILITY
IN WATER |
|
| pH |
|
| VAPOR DENSITY |
|
|
AUTOIGNITION
|
|
|
NFPA
RATINGS
|
Health: 1 Flammability: 0 Reactivity: 0 |
|
REFRACTIVE
INDEX
|
|
| FLASH
POINT |
|
| STABILITY |
Stable
under ordinary conditions. Light,
air sensitive. |
|
APPLICATIONS
|
|
Alkyl
substituted resorcinols
are used in manufacturing photoactive and novolac
resins for electronics industry, UV protectors, and
stabilizers and antioxidants for plastics and rubbers.
They are also used in analgesics, food additives,
fragrances, biocides, fungicides, dyes for pharmaceuticals and food additive
industry. It is believed that 5-methylresorcinol (5th position methyl
ester) is low toxic compared to other resorcinols. 3-hydroxy-5-methoxytoluene
is a fragrance with oakmoss, sweet odor used in cosmetics.
It is active in antibacterial and used as in pharmaceuticals.
|
| SALES
SPECIFICATION |
|
APPEARANCE
|
off-white crystals |
|
ASSAY |
98.5%
min |
|
MOISTURE |
0.1% max |
| TRANSPORTATION |
| PACKING |
25kgs
in fiber drum |
| HAZARD CLASS |
Not
regulated |
| UN
NO. |
|
| OTHER
INFORMATION |
|
Hazard
Symbols: XI, Risk Phrases: 22-36/37/38,
Safety Phrases: 22-26-36 |