Причина отмены 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).

Formerly under the jurisdiction of Committee D26 on Halogenated Organic Solvents and Fire Extinguishing Agents, this specification was withdrawn in November 2017. This standard is being withdrawn without replacement due to the manufacture and use of 1,1,1-trichloroethane having been phased out throughout most of the world. The committee is aligning itself with this and also with the efforts of the U.S. EPA Significant New Alternatives Program (SNAP).

Реферат

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.

Область применения

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 I

PropertySpecificationTest Method AppearanceFree of turbidity and suspended matterD3741 1,1,1-trichloroethane, weight %,
min92 D6806 Nonvolatile residue, weight
%, max0.0040D2109 Color, Pt-Co, max25D2108 Water, weight %, max0.015D3401 Acid acceptance as NaOH, weight
%, min0.20D2942 Aluminum scratch testPasses^AD2943 Acidity as HCl, weight %, max0.001 D2989 Alkalinity as NaOH, weight %, max0.020 D2106 Halide as Cl, weight %, max0.0005 D2988

^A Distill 100 mL solvent, collect 50 mL distillate, and conduct scratch test on distillate and portion remaining in distillation flask.

TABLE 2 Properties, Type II

PropertySpecificationTest Method AppearanceFree of turbidity and
suspended matterD3741 1,1,1-trichloroethane, weight %,
min90 D6806 Nonvolatile residue (NVR), weight
%, max0.010D2109 Color, Pt-Co, max30D2108 Water, weight %, max0.015D3401 Acid acceptance as NaOH, weight
%, min0.20D2942 Aluminum scratch testPasses^AD2943 Acidity as HCl, weight %, max0.001 D2989 Alkalinity as NaOH, weight %, max0.020 D2106 Halide as Cl, weight %, max0.0005 D2988

^A Distill 100 mL solvent, collect 50 mL distillate, and conduct scratch test on distillate and portion remaining in distillation flask.

TABLE 3 Properties, Type III^A

PropertySpecificationTest Method AppearanceFree of turbidity and
suspended matterD3741 1,1,1-trichloroethane, weight %,
min88D6806 Nonvolatile residue, weight
%, max0.020D2109 Color, Pt-Co, max50D2108 Water, weight %, max0.020D3401 Acid acceptance as NaOH, weight
%, min0.20D2942 Aluminum scratch testPasses^BD2943 Acidity as HCl, weight %, max0.002 D2989 Alkalinity as NaOH, weight %, max0.020 D2106

^A 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.