| CAS
NO. |
547-57-9 |
|
| EINECS
NO. |
208-924-8 |
| FORMULA |
C12H9N2NaO5S |
| MOL
WT. |
316.27 |
| H.S.
CODE |
|
| PRICE |
U$160/kg FR by air
for 10kgs
U$75/kg CFR by sea for 100kgs
|
| SYNONYMS |
Acid orange 6;
CI 14270; Resorcin Yellow; Resorcinol Yellow; |
|
4-((2,4-Dihydroxyphenyl)azo)benzenesulfonic acid sodium salt;
Tropaeolin O sodium salt; Sodium azoresorcinolsulfanilate;
Tropaeolene; Tropaeolin R; Tropaeoline; Yellow T; Resorcin Yellow;
Resorcinol Yellow; Sodium 4-(2,4-dihydroxyphenylazo)benzenesulphonate;
2,4-Dihydroxyazobenzene-4'-sulfonate sodium salt; C.I. Acid Orange 6;
C.I. Food Yellow 8; Chrysoin G; Chrysoine resorcinol;
p-(2,4-dihydroxyphenylazo)benzenesulfonate);
Chrysoin S; Chrysoine S; Sodium |
|
TOXICITY |
|
|
CLASSIFICATION
|
DYES
/ STAINS / INDICATOR /
|
|
PHYSICAL AND CHEMICAL PROPERTIES
|
| PHYSICAL
STATE |
orange to dark brown powder |
| MELTING POINT |
|
| BOILING
POINT |
|
| SPECIFIC GRAVITY |
|
| SOLUBILITY
IN WATER |
4 - 5
g/l at room temperature, 200
g/l at 100C |
| SOLUBILITY |
soluble in alcohol |
| AUTOIGNITION |
|
| pH |
|
| VAPOR DENSITY |
|
| NFPA RATINGS |
|
|
REFRACTIVE
INDEX
|
|
| FLASH
POINT |
|
| STABILITY |
Stable under ordinary conditions |
|
APPLICATIONS
|
|
Acid dyes are water-soluble dyes employed mostly in the form of sodium salts of
the sulfonic or carboxylic acids. They are anionic which attach strongly to
cationic groups in the fibre directly. They can be applicable to all kind of
natural fibres like wool, cotton and silk as well as to synthetics like
polyesters, acrylic and rayon. But they are not substantive to cellulosic
fibres. They are also used in paints, inks, plastics and leather. Orange acid
azo dyes produce an orange-pink color. They are used in coloring foods and drugs
and as intermediates for making photosensive dyes and drugs. They are used as
counter stains in histology and cytology and as components of Mallory's acid
fuchsin. Acid Fuchsin (acid magenta) is a various mixture of sulfonated fuchsins.
There are four of these compounds which have three sulfonic groups each. It is
used in Andrade's indicator and in various complex stains to demonstrate
collagen fibres red and in smooth muscle in contrast to
collagen. It is used as a pH indicator.
Examples of orange acid
dyes
- Ethyl orange Sodium salt (
CAS RN: 62758-12-7)
- Orange II
( CAS RN: 633-96-5)
- Orange
III (methyl orange, CAS RN: 547-58-0)
- Orange IV (CAS
RN: 554-73-4)
- Orange G
( CAS RN: 1936-15-8)
- Tropaeolin O
(CAS RN: 547-57-9)
- Victoria orange
- Acid Orange II
(Dibromofluorescein, 596-03-2)
Tropaeolin O is called chrysoine resorcinol when
used as
a food additive (E
number E103) and called tropaeolene as a biological stain. Tropaeolin O is
used as a pH indicator from pH 11.1 (yellow)
to pH 12.7 (orange).
|
| SALES
SPECIFICATION |
|
APPEARANCE
|
orange to dark brown powder |
| TRANSITION
pPH RANGE |
11.1 (yellow)
12.7 (orange).
|
|
MOISTURE
|
5.0%
max
|
|
RESIDUE
ON IGNITION |
22.0 -
26.0 % |
| TRANSPORTATION |
| PACKING |
|
| HAZARD CLASS |
|
| UN
NO. |
|
|
OTHER
INFORMATION
|
|
|