CAS No.: | 9035-69-2 |
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Formula: | C2h4o2 |
EINECS: | 215-175-0 |
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Cellulose acetate is reacted from cellulose and acetic an hydride, in condition of catalyst and other additives. With acetic acid as solvent, the process of cellulose basically is heterogeneous reaction.
According to the degree of substitution(DS), Cellulose acetate can be commonly classified to cellulose diacetate(DAC) and cellulose triacetate(TAC). Usually, DAC has DS with 2.2-2.5 while TAC has DS with above 2.7.(DS is an average number, It represents the number of -OH which is substituted by -C0CH3)
Item | Specifications | Test methods |
Combined acid% | 55.30±0.50 | GB/T32117-2015 Appendix A |
Inherent viscosity dL/g | 1.60±0.10 | GB/T32117-2015 Appendix B |
Moisture % | ≤ 2.0 | GB/T32117-2015 Appendix C |
Blockage value g/m2 | ≥ 25 | GB/T32117-2015 Appendix D |
Free acid % | ≤0.0050 | GB/T32117-2015 Appendix E |
Ash ppm | 250±10 | |
Color, b | ≤ 5.0 | GB/T32117-2015 Appendix G |
Bulk density g/m³ | 0.17~0.30 | |
Fe ppm | 2.0±0.5 | |
Conclusion | The results conforms withenterprise standards |
CELLULOSE ACETATE Chemical Properties | |
Melting point | 230-300ºC |
Boiling point | 210 °C |
density | 1.3 g/mL at 25 °C(lit.) |
refractive index | n20/D 1.475(lit.) |
solubility | The solubility of cellulose acetate is greatly influenced by the level of acetyl groups present. In general, cellulose acetates are soluble in acetone-water blends of varying ratios, dichloromethane- ethanol blends, dimethyl formamide, and dioxan e. |
form | Powder |
Specific Gravity | 1.3 |
color | White |
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