3-Methyl-4-(2',4'-dinitrophenylazo)-phenol, also known as 3-Methyl-4-(2,4-dinitrophenylazo)phenol or simply DNP-phenol, is a chemical compound with the molecular formula C13H10N4O5. It is an orange-red crystalline solid that is soluble in organic solvents such as ethanol and acetone. 3-Methyl-4-(2',4'-dinitrophenylazo)-phenol is primarily used as a reagent in the colorimetric determination of nitrites, where it forms a red complex upon reaction with nitrite ions. It is also employed in the analysis of various metal ions, such as copper, zinc, and cadmium, due to its ability to form colored complexes with these metals. The compound is sensitive to light and should be stored in a dark place to prevent degradation. It is important to handle DNP-phenol with care, as it is a hazardous substance and can cause harm if not used properly.
1552-03-0
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Basic information
- Product Name: 3-Methyl-4-(2',4'-dinitrophenylazo)-phenol
- Synonyms:
- CAS NO:1552-03-0
- Molecular Formula:
- Molecular Weight: 302.246
- EINECS: N/A
- Product Categories: N/A
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Chemical Properties
- Melting Point: N/A
- Boiling Point: N/A
- Flash Point: N/A
- Appearance: N/A
- Density: N/A
- Refractive Index: N/A
- Storage Temp.: N/A
- Solubility: N/A
- CAS DataBase Reference: 3-Methyl-4-(2',4'-dinitrophenylazo)-phenol(CAS DataBase Reference)
- NIST Chemistry Reference: 3-Methyl-4-(2',4'-dinitrophenylazo)-phenol(1552-03-0)
- EPA Substance Registry System: 3-Methyl-4-(2',4'-dinitrophenylazo)-phenol(1552-03-0)
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Safety Data
- Hazard Codes: N/A
- Statements: N/A
- Safety Statements: N/A
- WGK Germany:
- RTECS:
- HazardClass: N/A
- PackingGroup: N/A
- Hazardous Substances Data: 1552-03-0(Hazardous Substances Data)
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Check Digit Verification of cas no
The CAS Registry Mumber 1552-03-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,5 and 2 respectively; the second part has 2 digits, 0 and 3 respectively.Calculate Digit Verification of CAS Registry Number 1552-03:
(6*1)+(5*5)+(4*5)+(3*2)+(2*0)+(1*3)=60
60 % 10 = 0
So 1552-03-0 is a valid CAS Registry Number.
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1552-03-0Downstream Products
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3-Methyl-4-(2',4'-dinitrophenylazo)-phenol
