Phosphonic acid, (1-methylethyl)-, dibutyl ester, also known as dibutyl isobutylphosphonate, is a chemical compound with the molecular formula C10H23O2P. It is a colorless liquid with a density of 0.94 g/cm3 and a boiling point of 250°C. This organic phosphorus compound is widely used as a flame retardant, plasticizer, and stabilizing agent in various industrial applications, including plastics, rubber, and textiles. It is also employed as a catalyst in the production of certain polymers and as an intermediate in the synthesis of other phosphorus-containing compounds. Due to its potential environmental and health risks, proper handling and disposal procedures are essential when working with this chemical.

919-21-1

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Basic information
1. Product Name: Phosphonic acid, (1-methylethyl)-, dibutyl ester
2. Synonyms:
3. CAS NO:919-21-1
4. Molecular Formula: C11H25O3P
5. Molecular Weight:
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: Phosphonic acid, (1-methylethyl)-, dibutyl ester(CAS DataBase Reference)
10. NIST Chemistry Reference: Phosphonic acid, (1-methylethyl)-, dibutyl ester(919-21-1)
11. EPA Substance Registry System: Phosphonic acid, (1-methylethyl)-, dibutyl ester(919-21-1)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 919-21-1(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 919-21-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,1 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 919-21:
(5*9)+(4*1)+(3*9)+(2*2)+(1*1)=81
81 % 10 = 1
So 919-21-1 is a valid CAS Registry Number.

919-21-1Upstream product

919-21-1Downstream Products

4721-37-3 isopropylphosphonic acid

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