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Pool Sanitiser

SDIC Tablets — Effervescent & Slow-Dissolve

The same SDIC chemistry pressed into fixed-weight tablets, from 1 g effervescent up to 200 g slow-dissolve.

C₃Cl₂N₃NaO₃

  • CAS2893-78-9
  • HS code2933.69
  • UNUN 2465

About SDIC Tablets

Pressed sodium dichloroisocyanurate tablets in a range of fixed weights. Small effervescent tablets disperse quickly and are used for point-of-use and portable water disinfection; larger plain tablets dissolve slowly and are used in floaters, skimmers and erosion feeders. Tablet weight, grade and pack format are all specified at order.

Appearance
White pressed tablet, chlorine odour
Get a priceRequest the SDS

Safety data sheets and batch documentation are issued against the material supplied rather than hosted as generic PDFs. Tell us the grade and we will send the current documents.

SDIC Tablets — White pressed tablet, chlorine odour, supplied by RNJ Trading in 25 kg HDPE drum

Illustrative artwork. Packaging and labelling vary by grade and private-label requirement.

Technical data

SDIC Tablets specifications

Typical values for this grade, published so you can identify the product. They are not a specification guarantee — the batch documentation issued with your consignment is the document that governs what you receive.

Technical specification of SDIC Tablets — Effervescent & Slow-Dissolve, CAS 2893-78-9.
ParameterValue
Available chlorine56% min / 60% min
Tablet weights1 g, 3.3 g, 4 g, 20 g, 150 g, 200 g
Moisture3.0% max
pH (1% solution)5.5 – 7.0
Disintegration (effervescent)< 5 minutes
Shelf life24 months, sealed, dry storage

Grades available

  • Effervescent 1 g / 3.3 g / 4 g
  • Plain 20 g
  • Plain 150 g / 200 g

Packaging

  • 25 kg HDPE drum
  • 50 kg HDPE drum
  • 5 kg / 10 kg pails

Where SDIC Tablets is used

  • Floater and skimmer use in pools and spas
  • Erosion feeder and automatic chlorinator systems
  • Point-of-use and portable water disinfection
  • Hotel, gym and villa pool service routes

Handling & storage

Keep tablets in the sealed original container. Do not combine with calcium hypochlorite or TCCA in the same feeder, floater or container. Refer to the safety data sheet and the product label before handling or use.

This summary does not replace the safety data sheet. Read the current SDS in full, use the personal protective equipment it specifies, and comply with UAE Civil Defence and local authority requirements for chemical storage.

Frequently asked

Questions we get about SDIC Tablets

What does RNJ Trading supply?
Swimming pool and water treatment chemicals. The range covers chlorine sanitisers — SDIC granules and tablets, TCCA 90, calcium hypochlorite and sodium hypochlorite — alongside pH and alkalinity correctors, a coagulant for water clarity, and cyanuric acid stabiliser. Everything is available in pail, drum and bulk-bag formats. The full list, with grades and pack sizes, is on the products page.
What is SDIC?
SDIC — sodium dichloroisocyanurate, also written NaDCC or dichlor, CAS 2893-78-9 — is a stabilised chlorine donor supplied as a white granule or a pressed tablet. It is one of the standard chlorine chemistries used in swimming pools and in water disinfection. We supply it in 56% and 60% available-chlorine grades, in two particle sizes, and in tablets from 1 g to 200 g.
What is the difference between SDIC, TCCA and calcium hypochlorite?
They are three different chlorine chemistries. SDIC and TCCA are chlorinated isocyanurates and are stabilised, meaning they contain cyanurate; calcium hypochlorite is unstabilised and contains calcium instead. They differ in available chlorine, in how quickly they dissolve and in whether their solution is acidic or alkaline — the typical values for each are published on its product page. Which one suits a given installation is a decision for the person responsible for that water system.
What grades and pack sizes are available?
SDIC granules and tablets are supplied in 5 kg and 10 kg pails, 25 kg and 50 kg HDPE drums and 1,000 kg jumbo bags. TCCA 90 comes in pails and 25 kg and 50 kg drums. Calcium hypochlorite comes in 45 kg and 50 kg drums and in pails. The pH range — sodium bisulphate, sodium bicarbonate and soda ash — comes in 25 kg and 50 kg bags and jumbo bags. Sodium hypochlorite is supplied in cans, drums, IBCs and bulk.

Also in the range

Other products in the range

Sanitiser, pH correction and clarity products are usually bought together. These lines can go on the same enquiry as SDIC Tablets.

View the full range
  • SDIC Granular packagingBest seller

    SDIC Granular

    C₃Cl₂N₃NaO₃

    Stabilised chlorine granule in 56% and 60% available-chlorine grades, supplied in pails, drums and jumbo bags.

    • Available chlorine56% min / 60% min
    • Moisture3.0% max
  • TCCA 90 packagingCore line

    TCCA 90

    C₃Cl₃N₃O₃

    Stabilised chlorine at 90% available chlorine, in 20 g and 200 g tablets, granular and powder.

    • Available chlorine90% min
    • Moisture0.5% max
  • Calcium Hypochlorite packagingCore line

    Calcium Hypochlorite

    Ca(ClO)₂

    Unstabilised chlorine at 65–70% available chlorine, in granular and tablet form, sodium and calcium process.

    • Available chlorine65% – 70%
    • Moisture5.5% – 10%

Ready when you are

Tell us what you needand we’ll price it.

SDIC granules and tablets, TCCA 90, calcium hypochlorite, sodium hypochlorite, pH correctors, clarifier and stabiliser — in pails, drums, bags and bulk. Send the products, grades and quantities and we will come back with a written quotation.

Get a Price+971 4 000 0000
Written quotation, no obligationPriced to your grade and pack sizeUAE delivery and GCC export quoted

Prefer email? sales@rnjtrd.com · Sat – Thu, 8:00 AM – 6:00 PM (GST)