【国外标准】 Standard Specification for Reclaimed 1,1,1-Trichloroethane (Withdrawn 2017)

This specification defines reclaimed 1,1,1-trichloroethane, also known commercially as methyl chloroform. The types are defined: Type I - high quality reclaimed 1,1,1-trichloroethane, approximating MIL Specification; Type II - good quality reclaimed solvent; and Type III - minimal acceptable reclaimed solvent. The solvent shall be subject to tests for amine acid acceptance or alkalinity, color and appearance, nonvolatile matter content, total acid acceptance, aluminum scratch, water-soluble halide ion content, acidity-alkalinity, and water content.1.1 This specification defines Type I (high quality reclaimed 1,1,1-trichloroethane, approximating MIL Specification), Type II (good quality reclaimed solvent), Type III (minimal acceptable reclaimed solvent).1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazards statement see Section 4.1.3 1,1,1-trichloroethane also is known commercially as methyl chloroform.TABLE 1 Properties, Type IProperty Specification Test MethodAppearance Free of turbidity and suspended matter D37411,1,1-trichloroethane, weight %,min 92 D6806Nonvolatile residue, weight%, max 0.0040 D2109Color, Pt-Co, max 25 D2108Water, weight %, max 0.015 D3401Acid acceptance as NaOH, weight%, min 0.20 D2942Aluminum scratch test PassesA D2943Acidity as HCl, weight %, max 0.001 D2989Alkalinity as NaOH, weight %, max 0.020 D2106Halide as Cl, weight %, max 0.0005 D2988A Distill 100 mL solvent, collect 50 mL distillate, and conduct scratch test on distillate and portion remaining in distillation flask.TABLE 2 Properties, Type IIProperty Specification Test MethodAppearance Free of turbidity andsuspended matter D37411,1,1-trichloroethane, weight %,min 90 D6806Nonvolatile residue (NVR), weight%, max 0.010 D2109Color, Pt-Co, max 30 D2108Water, weight %, max 0.015 D3401Acid acceptance as NaOH, weight%, min 0.20 D2942Aluminum scratch test PassesA D2943Acidity as HCl, weight %, max 0.001 D2989Alkalinity as NaOH, weight %, max 0.020 D2106Halide as Cl, weight %, max 0.0005 D2988A Distill 100 mL solvent, collect 50 mL distillate, and conduct scratch test on distillate and portion remaining in distillation flask.TABLE 3 Properties, Type IIIAProperty Specification Test MethodAppearance Free of turbidity andsuspended matter D37411,1,1-trichloroethane, weight %,min 88 D6806Nonvolatile residue, weight%, max 0.020 D2109Color, Pt-Co, max 50 D2108Water, weight %, max 0.020 D3401Acid acceptance as NaOH, weight%, min 0.20 D2942Aluminum scratch test PassesB D2943Acidity as HCl, weight %, max 0.002 D2989Alkalinity as NaOH, weight %, max 0.020 D2106A Type III reclaimed 1,1,1-trichloroethane is not recommended for use in precision cleaning or vapor degreasing applications.B Distill 100 mL solvent, collect 50 mL distillate, and conduct scratch test on distillate and portion remaining in distillation flask.