| Customization: | Available |
|---|---|
| CAS No.: | 55-55-0 |
| Formula: | C7h11no5s |
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Product Name
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Metol
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Synonyms
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4-Methylaminophenol sulfate; 4-(Methylamino)phenol hemisulfate salt
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CAS
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55-55-0
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Molecular formula
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2(C7H9NO)·H2SO4
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Molecular Weight
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172.19
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Physical and Chemical Properties
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Melting Point :260ºC
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Density :1.250 g/mL,25ºC
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General Description
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white to almost white crystalline powder
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Usage
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It is used for the development of high-speed, low contrast negative materials.
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Packing
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25kgs/drum
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Storage condition
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Stored in a cool, ventilated warehouse. Stay away from fire and heat. Storage should be kept separate from oxidant. Equipped with
corresponding varieties and quantities of fire equipment. The storage area shall be equipped with leakage emergency treatment equipment and suitable shelter materials. |
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Specifications
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Items
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Standard
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physical appearance
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white to almost white crystalline powder free from any lumps.
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assay
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99.0% min.
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ash (residue on ignition)
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0.1% max.
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iron as fe
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0.003% max.
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heavy metal
as pb (lead) |
0.001% max.
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ph of 4% aqueous solution at 20ºC
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3.4 to 3.7 ph
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moisture
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0.30% max.
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apperance of solution in water
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5% solution in distilled water should be clear and almost colorless and free from extraneous impurities.
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