Basic Info.
Model NO.
SUREST-86
Purity
90%~99%
Type
Sodium Hydrosulfide
Grade Standard
Industrial Grade
Shelf Life
2 Years
Stock
Available
Molecular Weight
342.25
Water Solubility
Soluble in Water
Transport Package
25kg or 200 Kg/Barrel
Specification
98%min
Trademark
Surest
Origin
China
HS Code
3204120000
Production Capacity
1000 Tons Yearly
Product Description
Alizarin Red S
Chemical Property/Description
Orange-yellow or yellow-brown powder, soluble in water, slightly soluble in ethanol, insoluble in benzene. The pH of 1% aqueous solution is 2.15, and its aqueous solution is light yellowish brown, yellow after adding hydroc acid, and blue purple after adding hydroxide.
Main Uses:
(1) Determination of fluoride. Acid-base indicator. Alizarin red can form stable red complexions with many metal ions, and is often used as a metal indicator in analysis. Spectrophotometric determination of metal ion color development agent; Often used as a metal indicator in analysis; Spectrophotometric determination of metal ion color development agent; Acid-base indicator, the first color range PH 3.7 (yellow) ~ 5.2 (purple), the second color range PH 10.1 (purple) ~ 12.0 (light yellow); Used for polarographic determination of metal ions.
(2) Used as an acid-base indicator, ph 3.7 (yellow) ~ 5.2 (purple). Used as a chromogenic agent for spectrophotometric determination of fluoride, aluminum, beryllium, germanium, indium and cobalt. It is also used as an indicator for the determination of rhenium, thorium, scandium and other metals.
| Name | Alizarin Red S |
| Synonyms | C.I. 58005; 9,10-Dihydro-3,4-dihydroxy-9,10-dioxo-2-anthracenesulfonic acid sodium salt; Mordant Red 3; Sodium alizarinesulfonate |
| Molecular Structure | |
| Molecular Formula | C14H7NaO7S |
| Molecular Weight | 342.25 |
| CAS Registry Number | 130-22-3 |
| EINECS | 204-981-8 |
Chemical Property/Description
Orange-yellow or yellow-brown powder, soluble in water, slightly soluble in ethanol, insoluble in benzene. The pH of 1% aqueous solution is 2.15, and its aqueous solution is light yellowish brown, yellow after adding hydroc acid, and blue purple after adding hydroxide.
Main Uses:
(1) Determination of fluoride. Acid-base indicator. Alizarin red can form stable red complexions with many metal ions, and is often used as a metal indicator in analysis. Spectrophotometric determination of metal ion color development agent; Often used as a metal indicator in analysis; Spectrophotometric determination of metal ion color development agent; Acid-base indicator, the first color range PH 3.7 (yellow) ~ 5.2 (purple), the second color range PH 10.1 (purple) ~ 12.0 (light yellow); Used for polarographic determination of metal ions.
(2) Used as an acid-base indicator, ph 3.7 (yellow) ~ 5.2 (purple). Used as a chromogenic agent for spectrophotometric determination of fluoride, aluminum, beryllium, germanium, indium and cobalt. It is also used as an indicator for the determination of rhenium, thorium, scandium and other metals.
