Structural formula
| Business number | 016W |
|---|---|
| Molecular formula | C7H9NO·1/2H2SO4 |
| Molecular weight | 172.19 |
| label |
4-(methylamino)phenol sulfate, Metol |
Numbering system
CAS number:55-55-0
MDL number:MFCD00013140
EINECS number:200-237-1
RTECS number:SL8650000
BRN number:3919382
PubChem number:24859237
Physical property data
1. Character:Colorless needle-like crystals. Discolors in air.
2. Density (g/mL,25/4℃): 1.250
3. Relative vapor density (g/mL,air=1): Undetermined
4. Melting point (ºC): 260℃(decomposition)
5. Boiling point (ºC,Normal pressure): Undetermined
6. Boiling point (ºC,5.2kPa): Undetermined
7. Refractive index: Undetermined
8. Flashpoint (ºC): Undetermined
9. Specific optical rotation (º): Undetermined
10. Autoignition point or ignition temperature (ºC): Undetermined
11. Vapor pressure (Number of tautomers: 3
6. Topological molecular polar surface area (TPSA):139
7. Number of heavy atoms: 23
8. Surface charge: 0
9. Complexity: 158
10. Number of isotope atoms: 0
11. Determine the number of atomic stereocenters: 0
12. The number of uncertain atomic stereocenters: 0
13. Determine the number of stereocenters of chemical bonds: 0
14. Uncertain number of chemical bond stereocenters: 0
15. Number of covalent bond units: 3
Properties and stability
None
Storage method
This product should be sealed and stored in a cool place.
Synthesis method
Methylaminophenol ([ 150-75-4]), and then converted into salt.
Purpose
mso-ascii-font-family: Arial; mso-hansi-font -family: Arial; mso-bidi-font-family: Arial; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>Separation of gold and palladium. Reduction of phosphomolybdic acid. Assay silver. Determination of gold and silver. Developer. Fur dyeing.
mso-ascii-font-family: Arial; mso-hansi-font -family: Arial; mso-bidi-font-family: Arial; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>This product is a representative and main fast developer, and is also often pronounced as Mettal. It can be used alone or in combination with hydroquinone, and the effect is very good. The relative reducing power of this product is about 20 times that of hydroquinone. The developer made of this product and hydroquinone in the ratio of 1: 2-4 is called MQ developer; if formulated with partial acid, it can be used as a particle developer (film sensitivity is 1/2).
Core quantity: 0
14. Uncertain number of chemical bond stereocenters: 0
15. Number of covalent bond units: 3
Properties and stability
None
Storage method
This product should be sealed and stored in a cool place.
Synthesis method
Methylaminophenol ([ 150-75-4]), and then converted into salt.
Purpose
mso-ascii-font-family: Arial; mso-hansi-font -family: Arial; mso-bidi-font-family: Arial; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>Separation of gold and palladium. Reduction of phosphomolybdic acid. Assay silver. Determination of gold and silver. Developer. Fur dyeing.
mso-ascii-font-family: Arial; mso-hansi-font -family: Arial; mso-bidi-font-family: Arial; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>This product is a representative and main fast developer, and is also often pronounced as Mettal. It can be used alone or in combination with hydroquinone, and the effect is very good. The relative reducing power of this product is about 20 times that of hydroquinone. The developer made of this product and hydroquinone in the ratio of 1: 2-4 is called MQ developer; if formulated with partial acid, it can be used as a particle developer (film sensitivity is 1/2).
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