Sanitary Silicone Akemi anthracite 23, 310 ml cartridge, Art. No. 16276

Sanitary Silicone Akemi anthracite 23 and the release of acetic acid

The smell of vinegar when the cartridge opens is not a side effect — it is the reaction principle. AKEMI® Sanitary Silicone is acetate cross-linked and releases acetic acid during hardening. For the tiler that means there is a list of materials this joint must not go near.

Anthracite 23 is the darkest grey in the range and therefore often ends up where dark tiles meet exposed fittings and pipework. Exactly the constellation in which that list matters.

Application area

AKEMI® Sanitary Silicone is a special joint-sealing material for expansion and connecting joints in kitchens, living and sanitary areas on ceramic tiles. Approved for interior and exterior use. Excellent and durable adhesion on non-porous silicate materials: glass, glazed ceramics, tiles, clinker, glass ceramics, email, porcelain and aluminium.

Where anthracite 23 must not go — and why

The principle. The product is acetate cross-linked and releases acetic acid during hardening. Use on or near acid- or corrosion-sensitive materials is not recommended. The manufacturer names specifically: iron, copper, brass, zinc, lead, concrete and building materials containing lime or cement.

Non-ferrous metals. Discolouration may occur in contact with non-ferrous metals such as copper or brass. In practice this covers exposed fittings, escutcheons, waste sets and visible copper pipework — anything in a bathroom sitting close to the joint.

Elastomers and coatings. Discolouration occurs on tar or bitumen coated surfaces as well as on elastomers such as EPDM, APTC or neoprene. Sufficient adhesion cannot be achieved on these materials either — nor on polyolefins (PE, PP), silicone, PTFE and butyl rubber.

Adjacent materials and functional units. The manufacturer goes further than the adhesion face: durable compatibility between the sealant and adjacent materials — coating systems, for instance — or complete functional units such as insulating, laminated or laminated safety glazing must be ensured before use, in order to avoid discolouration, loss of adhesion, migration effects or other harmful consequences.

And what does work: tiles, glazed ceramics, glass, clinker, glass ceramics, email, porcelain and aluminium — excellent and durable adhesion. On metal generally, the data sheet allows no general prediction; a test of adhesion and compatibility must be carried out beforehand.

Technical data

Full characteristic values, test standards and processing instructions: see the manufacturer's Technical Data Sheet.

Consumption per cartridge

Application in brief

1. Contact surfaces dry, clean, free of grease and dust; clean with AKEMI® Cleaner A (tiles, ceramics, glass, non-painted wood, metal) or Cleaner I (plastics, painted surfaces).
2. Joint size min. 5 x 3 mm. Insert back-filling cords to avoid adhesion on three flanks: closed-cell PE in damp rooms and outdoors, otherwise open-cell PUR. Mask off the joint edges.
3. Apply at +5 °C to +35 °C with dry flanks. Smoothen within 10–15 minutes using a smoothing rubber and smoothing agent; remove excess smoothing agent.
4. Remove the masking tape before the skin forms, pulling towards the joint. Clean tools with AKEMI® Cleaner A.

Full instructions for use in the manufacturer's Technical Data Sheet.

Important restrictions

For professional use only. Not suited for porous, absorbent surfaces like natural and artificial stone — danger of discolouring in the marginal zone. AKEMI offers dedicated neutral cross-linked products for natural stone.

• Releases acetic acid during hardening — not on or near acid- or corrosion-sensitive materials (iron, copper, brass, zinc, lead, concrete, materials containing lime or cement).
• No sufficient adhesion on silicone, PE, PP, PTFE, butyl rubber, neoprene, EPDM or plasticised plastics.
• Discolouration on tar- and bitumen-coated surfaces as well as elastomers (EPDM, APTC, neoprene).
• On wood, metal, paints, plastics, stainless steel and sanitary acrylate no general prediction is possible — test adhesion and compatibility beforehand.
• Not for the construction of aquariums. Read the Safety Data Sheet.

Conformity

EN 15651-3 (XS1) · EN 15651-4 (PW20LM Ext.-Int.) · GEV EMICODE® EC1^PLUS · VOC France emission class A+ · REACH compliant (EU No. 1907/2006) · IVD-leaflets 3-1 and 14.

Further colours in this range

Sanitary Silicone Akemi transparent 01 (Art. No. 16255) · Sanitary Silicone Akemi white 02 (Art. No. 16256) · Sanitary Silicone Akemi silver grey 05 (Art. No. 16259) · Sanitary Silicone Akemi pale grey 11 (Art. No. 16264) · Sanitary Silicone Akemi bright grey 12 (Art. No. 16265) · Sanitary Silicone Akemi flannel grey 15 (Art. No. 16268) · Sanitary Silicone Akemi stone grey 17 (Art. No. 16270) · Sanitary Silicone Akemi sanitary grey 18 (Art. No. 16271) · Sanitary Silicone Akemi grey 22 (Art. No. 16275) · Sanitary Silicone Akemi cloud grey 74 (Art. No. 16300) · Sanitary Silicone Akemi fog 82 (Art. No. 16304)