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After two days, the treated leather was polished with a soft cloth. Hard leathers can be soaked in a solution of one part British Museum leather dressing: three parts Stoddard solvent. [4] British Museum leather dressing darkens leather, but it is a treatment with a good success record. [3] [4]
Stoddard solvent is a specific mixture of hydrocarbons, typically over 65% C 10 or higher hydrocarbons, [4] developed in 1924 by Atlanta dry cleaner W. J. Stoddard and Lloyd E. Jackson of the Mellon Institute of Industrial Research as a less flammable petroleum-based dry cleaning solvent than the petroleum solvents then in use.
25 mg/m 3-cyanides: 7681-49-4: 0951: Sodium fluoride: 250 mg/m 3-fluoride: 62-74-8: 0484: Sodium fluoroacetate: 2.5 mg/m 3-62748: 1310-73-2: 0360: Sodium hydroxide: 10 mg/m 3-1310732: 7803-52-3: 0776: Stibine: 25.5 mg/m 3: 5 ppm: 7803523: 8052-41-3: 0361: Stoddard solvent: 20 000 mg/m 3-8052413: 57-24-9: 0197: Strychnine: 3 mg/m 3-57249: 100-42 ...
In the United Kingdom, the environmental regulator permits only chemical additives which are classed as non hazardous to groundwater for fracturing fluids. [3] [4] [5] Operators are required to disclose the content of hydraulic fracturing fluids to the relevant environment agency [6] while the composition must be disclosed if the regulator demands it. [7]
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Techron consists of five components: [3] [failed verification] Distillates, hydrotreated light at 40-70% weight; Stoddard solvent at 15-40% weight; Solvent naphtha (petroleum), light aromatic at 5-10% weight; 1,2,4-trimethylbenzene at 1-5% weight; Polyetheramine (PEA) , polyether amines at 20-49% weight
Schematic diagram of solvothermal synthesis setup: (1) stainless steel autoclave (2) precursor solution (3) Teflon liner (4) stainless steel lid (5) spring. Solvothermal synthesis is a method of producing chemical compounds, in which a solvent containing reagents is put under high pressure and temperature in an autoclave.