plastic bar grating
Links
- HPMC, or Hydroxypropyl Methylcellulose, is a vital ingredient in the formulation of mortar, a key material in construction and masonry works. It is a cellulose ether, derived from natural cellulose through chemical modification, and it plays an indispensable role in enhancing the performance and durability of mortar.
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- Furthermore, HPMC has found use in the paint and coatings industry, where it acts as a rheology modifier, improving the flow and leveling properties of paints, and in the paper manufacturing process, where it enhances the strength and printability of the final product.
One particular manufacture (naming no names, but one of the big ones) lists it as E464 without the full name…it’s the same thing.
hydroxyethyl cellulose powder.
Appearance: both HPMC and HEC are white powder. HPMC is a Non-ionic compound, a non-reactive viscoelastic polymer. HEC raw material is Alkaline Cellulose and Ethylene Oxide.
The applicant claims that the feed additive HPMC is specified to be manufactured to meet the specifications set for its use as a food additive. The main specifications as food and feed additive are: methoxyl groups ≥ 19 and ≤ 30%, hydroxypropoxyl groups ≥ 3 and ≤ 12%, loss on drying < 10%, sulfated ash < 1.5% (for products with viscosities of 50 mPa.s or above) or < 3% (for products with viscosities below 50 mPa.s). Five batches of the additive were analysed for some of the above specifications, resulting in: methoxyl groups (four batches) 23.5–29.2%, hydroxypropoxyl groups (four batches) 5.2–8.4%, loss on drying (one batch) 1.2% and sulfated ash (one batch) 0.6%. Only statements, without figures, of compliance with the specifications for some impurities (heavy metals, arsenic, solvents, microbial purity) were provided. Information on other impurities ((pesticides, dioxins, dioxin-like and non-dioxin-like polychlorinated biphenyls, mycotoxins, botanical impurities) was not provided.





3.2.2.4 Reproductive and developmental studies


