What is MSDS (material safety data sheet)?
MSDS is the material safety data sheet of chemicals, which is called chemical safety information card in the world. It is a document that chemical manufacturers and importers clarify the physical and chemical characteristics of chemicals (such as pH value, flash point, flammability, reactivity, etc.) and the possible hazards to users' health (such as carcinogenesis, teratogenesis, etc.). It is a comprehensive document about the combustion and explosion performance, toxicity and environmental hazards of chemicals, as well as the safe use, leakage emergency rescue disposal, main physical and chemical parameters, laws and regulations and other aspects of information. It is an important document to transmit the information of chemical hazards.
COA(Certificate Of Analysis) What is it?
CoA means analysis report in Chinese. Generally, it is aimed at the raw
materials of products, and each raw material needs to provide COA
analysis report. Cosmetics generally need to do raw material COA report
to prove the safety of raw materials. The current EC (EU) 1223 / 2009
regulation requires cosmetic enterprises to provide COA reports of each
raw material.
TDS(Technical Data Sheet) What is it?
TDS Chinese means technical parameter table, also known as technical
data table. According to the specifications of each manufacturer, the
technical parameter table should be submitted for comparison with other manufacturers. Bidding, technical meetings, specifications, logistics
trade will refer to the technical parameter table.
What are the differences between TDS report, COA report and MSDS report?
TDS and COA are generally for raw materials, and MSDS is generally for
products. The same raw material or product can be used for MSDs report,
TDS report and COA report. These three reports are completely independent.
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Abbass_1 said:My Question is: just like we have pH control for preservatives and anionic/cationic surfactants, do we have the same for TDS?
I still don’t really get it. TDS is everything dissolved in water which doesn’t evaporate upon boiling. IMHO TDS can’t be compared to pH.
.Where I live, water quality reports of our tap water are available online
Anyway, you can control some side-effects resulting from certain dissolved salts such as heavy metals (most of all iron) by adding a chelate.
The effect of divalent cations (usually calcium) on emulsion stability can not be quenched/prevented by suitable means.
Buy a small RO unit or at least a cation exchange resin cartridge as used to produce soft water by exchanging calcium/magnesium against sodium.
Demineralised water (the one for car coolers or pressing irons) isn’t that expensive.