What is D4 in silicone?
D4 is an odourless, colourless liquid mostly used as an intermediate or basic raw material in the production of silicone rubbers, gels and resins. When used as an intermediate during the manufacturing process, virtually all D4 is consumed with only a tiny amount remaining in final products.
What is D4 D5 D6?
D4, D5 and D6 are the three cyclosiloxanes in commercial production and their use has been proven safe for human health and the environment.
What is D4 and D5?
D4 and D5 are cyclosiloxanes mainly used as monomers for silicone polymer production. They also have a direct use in personal care products. D4 has been identified as a persistent, bioaccumulative and toxic (PBT) and very persistent very bioaccumulative (vPvB) substance. D5 has been identified as a vPvB substance.
What is D6 silicone?
D6 is an odorless, colorless liquid mostly used as an intermediate or basic raw material in the production silicone rubbers, gels and resins. D6 can also be used as an ingredient in silicone mixtures used in cosmetic applications such as skin creams and deodorants.
What is D4 octamethylcyclotetrasiloxane?
Octamethylcyclotetrasiloxane (D4; CAS No. 556-67-2) is used as a monomer in the manufacture of polymeric materials, which are widely used in various industrial and/or medical applications, such as breast implants.
Is silicone an SVHC?
An SVHC listing is not a ban on the use of silicone polymers, nor is it a ban or a restriction on the use of D4, D5, and D6. Silicone polymers can be used safely in all products. However, the formal identification of SVHC carries communication and risk management measure obligations.
Is D4 banned?
At the beginning of 2017 the European Commission (EC) proposed to ban Cyclotetrasiloxane (D4) and Cyclopentasiloxane (D5) in rinse-off cosmetic products, with 0.1% or more of either substance. This ban, when officially published, is going to cover products such as shampoos, conditioners, shower gels, etc.
Is dimethicone a D4?
Polydimethylsiloxane (PDMS) silicone polymers are produced from D4 and contain residual amounts of D4 and D5. Dimethicone is a common PDMS ingredient in cosmetics.
What is Cyclotetrasiloxane Octamethyl?
Octamethylcyclotetrasiloxane is a cyclosiloxane that is the octamethyl derivative of cyclotetrasiloxane. It is an organosilicon compound and a cyclosiloxane. It derives from a hydride of a cyclotetrasiloxane. ChEBI.
Is rubber Reach compliant?
Industrial Rubber works closely with their suppliers to ensure that all the preparations used for manufacturing the finished products contain none of the REACH Substance of Very High Concern (SVHC) that appear in the ‘Candidate List’.
What is Cyclohexasiloxane makeup?
Cyclohexasiloxane is one of several forms of synthetic, cyclic (meaning the molecule is circular rather than straight or crosslinked) silicone used in cosmetic formulas to improve texture and enhance skin’s hydration.
What is D5 in makeup?
Cyclopentasiloxane is a silicone regularly used in cosmetic products. It’s commonly found in medical implants, sealants, lubricants, and windshield coatings. D5 is colorless, odorless, non-greasy, and water-thin. It doesn’t get absorbed into the skin.
Is siloxane a silicone?
Siloxanes are commonly known as silicones. They belong to the organosilicon compounds and are exclusively obtained by synthesis. Their chemical structure determines a range of physicochemical properties which were recognized as unique.
What is siloxane D4?
D4 is used in the manufacture of a wide variety of products, including silicone polymers and copolymers. D4 is also found in personal care products such as hair/skin care products and antiperspirants and deodorants, as well as in pharmaceuticals.
Is D4 safe?
D4, D5 and D6 are safe for the environment and for human health, when used for their intended purposes. Silicones are not new on the market. In fact, they have been used for more than six decades. Still, observed levels monitored in a wide variety of temperatures and surroundings do not give rise to any concern.
Is silicone rubber Reach compliant?
Following product testing, Silicone Engineering can confirm that none of the 197 substances on the current SVHC candidate list are present in reportable levels and are therefore deemed REACH compliant.