S38

Name and positioning. The data page is titled 'Anti-Light-Fatigue Agent for Optically Variable Pigments S38'; the positioning sentence is quoted verbatim: 'Anti-Light-Fatigue Agent for Optically Variable Pigments S38 is a liquid additive developed by our company specifically for the light fatigue resistance of optically variable pigments; it has a very good effect on the light fatigue resistance of optically variable pigments.' (Data source: product handbook / official product data)

Physical property indicators (quoted verbatim): appearance 'orange-yellow transparent liquid'; density 1.02-1.04; PH value 6-6.5; refractive index 1.460-1.850; water solubility 'water-soluble'; solids content 100%; 'This product is soluble in water, alcohol, aromatics, ethanol, acetone, etc.' (Data source: product handbook / official product data)

Usage (quoted verbatim): 'On metal products containing optically variable pigments, apply evenly; after drying, a layer of wax is sufficient. Plastic products can be added together with the optically variable pigment into the plastic raw material for production, at a dosage of 1%.' (Data source: product handbook / official product data)

Storage (quoted verbatim): 'This product is packaged in 25kg blue PE plastic drums. This product is non-flammable and non-corrosive, and has good storage stability.' (Data source: product handbook / official product data)

• Physical property highlights: orange-yellow transparent liquid; density 1.02-1.04; solids content 100%; water-soluble (quoted verbatim).
• Two usage approaches: metal products—apply coating + wax after drying; plastic products—add together with the optically variable pigment into the plastic raw material, dosage 1%.
• Pharmacological data (quoted verbatim): 'This product has low toxicity; the oral LD5012g/kg body weight in rats. At a dosage of 2.0g/kg body weight/day administered to rats continuously for 90 days, the experimental rats showed somewhat slowed development, changes in blood picture, and mild kidney damage, but when dosed at 0.5g/kg body weight/day, these toxic effects were not observed.'
• This grade is a historically listed grade (Discontinued); the data are retained; this page is compiled as-is from the historical data.

The data do not list a separate mechanism section; the entry provides three types of records around 'light fatigue resistance': physical property indicators, pharmacological data, and usage. This page quotes the key points verbatim and does not extend inferences. (Data source: product handbook / official product data)

Functional positioning: for the light fatigue resistance of optically variable pigments; metal products use a film-forming protection route of 'apply coating + waxing', while plastic products use an internal addition route (added together with the optically variable pigment into the plastic raw material). (Data source: product handbook / official product data)

Use conditions: the data do not give process parameters such as operating temperature, stirring, drying time ⇒ not drafted on the user's behalf. (Data source: product handbook / official product data)

The table below summarizes the main components and physicochemical properties of S38 as recorded in the documentation (retaining the original wording and units from the documentation).

This grade's entry does not list prohibited items or specialized tests; pharmacological data are reproduced verbatim from the source (see Section 7); items not recorded in the documentation do not appear in this table. (Data source: product handbook / official product data)

The documentation gives usage and dosage along two lines:

The documentation gives a fixed value for plastic parts (1%) and a coating-process statement for metal parts (no numerical basis); both lines are reproduced as recorded, without conversion and without assuming a denominator.

The 1% for plastic parts is the only dosage value in the documentation; metal parts have no quantitative value and are presented as recorded. (Data source: product handbook)

The application directions listed in the documentation are as follows:

Metal products with optically variable pigment

Apply evenly on metal products containing optically variable pigment; after drying, apply a layer of wax.

Plastic products with optically variable pigment

Can be added together with optically variable pigment into the plastic raw material during production; dosage 1%.

S38 belongs to the optically variable pigment supporting direction. Nearby model numbers in the S series and functional additives in the same brochure differ in direction; select by function. Comparison as follows:

Reading note: the comparison only explains the documentation positioning and applicable objects of each; the three types differ in function and basis, and values cannot be applied interchangeably. (Data source: product handbook)

The following points come item by item from documentation records; items not listed in the documentation are not drafted here.

The data on this page come from product documentation and can be traced item by item:

• Product handbook: S38 entry (overview / physical property indicators / pharmacological data / usage method / storage method); adjacent entry sections in the same brochure (positioning sentences for S007, F55, etc.).
• Documentation cross-verification: the same model entry is consistent across excerpted text in three documents—the handbook, the comprehensive series volume, and the content-edited version (single source family; cross-verification across three volumes).

Not covered by the source material (not written on this page — to be added later)

• The original LD50 wording is 'oral LD5012g/kg body weight' (= oral LD50 12 g/kg body weight)—transcribed as-is with a parenthetical reading; the value is unchanged.
• Prohibited items, shelf life, and safe-handling data (MSDS level): not recorded in the existing documentation.
• Process parameters for metal part treatment (drying time / temperature, etc.): not given in the documentation ⇒ not drafted here.

S38 is listed as a discontinued grade; the documentation is retained. This page is compiled from historical source material and is not a recommendation of a currently supplied product; please base your selection on current production grades and the latest documentation.