Question 1

What are the main differences between SDIC and TCCA?

Accepted Answer

SDIC (Sodium Dichloroisocyanurate) dissolves fast (2-3 min in 25 °C water) with a neutral pH (6.5-7.0), making it ideal for shock dosing and drinking-water treatment. TCCA (Trichloroisocyanuric Acid) dissolves slowly (30-60 min for a 200 g tablet) and releases chlorine steadily for 5-7 days, which suits swimming-pool and long-cycle disinfection. Available chlorine differs too: SDIC 56-60% vs TCCA 90%.

Question 2

What is the shelf life of SDIC and TCCA tablets?

Accepted Answer

Under sealed original packaging and dry storage below 30 °C, TCCA tablets have a shelf life of 2 years and SDIC has 3 years. Active-chlorine loss is typically less than 1% per year when kept away from direct sunlight, moisture, and reducing agents such as ammonia or organic matter.

Question 3

What is your minimum order quantity (MOQ)?

Accepted Answer

Standard MOQ is 1000 kg (1 metric ton) for stock items in 25 kg drums. For 1000 kg jumbo bags MOQ is 5 tons, and for custom OEM packaging (labels, colors, bottle size) MOQ is 5 tons per SKU. Full container loads (25 t in a 20'FCL) receive the best per-kg pricing.

Question 4

Can you provide COA, MSDS, and third-party test reports?

Accepted Answer

Yes. A batch-specific COA (Certificate of Analysis) is issued with every shipment covering active chlorine, moisture, pH, and appearance. MSDS is available in English, Spanish, Russian, French, and Arabic. Third-party test reports from SGS or Intertek can be arranged prior to shipment for an additional inspection fee.

Question 5

Which shipping terms and payment methods do you accept?

Accepted Answer

We work under FOB (Tianjin/Qingdao/Shanghai), CIF (any major destination port), CFR, and DAP. Payment: 30% T/T advance + 70% against B/L copy, or 100% irrevocable L/C at sight. Small-order buyers may pay 100% T/T with PayPal or Alibaba Trade Assurance for orders under USD 5 000.

Question 6

Do you supply free samples?

Accepted Answer

Yes. We provide up to 500 g of SDIC or TCCA in original 25 kg drum split-packaging free of charge; the buyer only covers the international courier fee (typically USD 40-60 via DHL/FedEx). Sample lead time is 1-2 business days after payment of the courier fee.

Question 7

How is chlorine stability maintained during ocean transit to hot climates?

Accepted Answer

Our export packaging uses UV-blocking HDPE drums with sealed aluminium liners and desiccant packs. Container temperature is monitored during summer shipments to the Middle East, West Africa, and South-East Asia. Active-chlorine loss during a 45-day sea voyage is typically below 1.5%.

Question 8

What are the certifications and export approvals held by Shilan Chemical?

Accepted Answer

We hold ISO 9001:2015, ISO 14001, NSF/ANSI 60 (drinking water), BPR (EU Biocidal Products), REACH pre-registration, and Ecocert-listed formulations. Our factory is inspected annually by SGS and holds Alibaba.com Verified Supplier status since 2019.

Активный хлор	56%–60%
Внешний вид	Белый мелкокристаллический порошок
Гранулометрия / Таблетка	200 меш / 325 меш
pH (раствор 1%)	6.0-7.0
Влажность	≤ 1%

Активный хлор	56%–60%
Внешний вид	Белые свободно текучие гранулы
Гранулометрия / Таблетка	0,5-3 мм (8-30 меш / 20-40 меш)
pH (раствор 1%)	6.0-7.0
Влажность	≤ 2%

Активный хлор	56%–60%
Внешний вид	Белая прессованная шипучая таблетка
Гранулометрия / Таблетка	20 г (стандартный) / 200 мг (мини), диаметр 22 мм
pH (раствор 1%)	6.0-7.0
Влажность	≤ 1%

Продукция SDIC

Порошок SDIC 60%

Гранулы SDIC 60%

Таблетки SDIC 60%

Ищем глобальных партнёров B2B и дистрибьюторов &