5555-21-5 Usage
Usage
a. Preparation of dyes
b. Preparation of pigments
c. Preparation of pharmaceuticals
d. Building block in the synthesis of various organic compounds
Physical appearance
White crystalline solid
Odor
Slight odor
Solubility
Slightly soluble in water
Inhalation
May pose health hazards if inhaled
Ingestion
May pose health hazards if ingested
Safety measures
Proper safety measures should be followed when handling 1,3-Isobenzofurandione,4,5-dimethyl-(9CI)
Check Digit Verification of cas no
The CAS Registry Mumber 5555-21-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,5 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5555-21:
(6*5)+(5*5)+(4*5)+(3*5)+(2*2)+(1*1)=95
95 % 10 = 5
So 5555-21-5 is a valid CAS Registry Number.
5555-21-5Relevant academic research and scientific papers
Ashless additives for lubricating compositions
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, (2008/06/13)
Superior ashless additives for lubricants are prepared by a process comprising first introducing a petroleum sulfonic acid and a polyamine to a reaction zone and subsequently introducing a cyclic anhydride of a dicarboxylic acid into the reaction zone. In another embodiment, the solids content of the additives is reduced to acceptable levels by removal of free SO2 from the petroleum sulfonic acid prior to preparing the additive. Lubricating oil compositions containing these ashless additives are also provided.
