Molekula
Silica gel indicating 2-5mm, orange to colourless, pore diameter 20-30 A
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Silica gel indicating (2-5mm beads, orange to colourless) is a porous, hygroscopic desiccant used to absorb moisture and protect products from humidity damage, with a built-in color change indicator for easy monitoring. It features a pore diameter of 20-30 Å, ensuring efficient adsorption. CAS 7631-86-9, molecular formula SiO₂, molecular weight 60.08 g/mol, and requires ambient storage. Signal word: Warning. Molekula supplies Silica Gel Indicating 2-5mm from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
1 kg — $58.70 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Orange to White/Colourless |
| Moisture | ≤3.0% |
| H20 Adsorption Capacity (80% RH) | ≥ 33.0% w/w |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Amorphous powder |
| Odour | Odorless |
| Melting Point | 1713 °C |
| Boiling Point | 2230 °C |
| Solubility (other solvents) | Soluble in hot potassium hydroxide and hot sodium hydroxide solutions. Insoluble in ethanol |
| Vapour Pressure | 10 mmHg at 1732 °C |
Source: PubChem CID 24261 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90005637 |
| CAS Number | 7631-86-9 |
| IUPAC Name | dioxosilane |
| EC Number | 231-545-4 |
| Molecular Formula | SiO2 |
| Molecular Weight | 60.08 |
| Exact Mass | 59.9668 |
| SMILES | O=[Si]=O |
| InChIKey | VYPSYNLAJGMNEJ-UHFFFAOYSA-N |
| InChI | InChI=1S/O2Si/c1-3-2 |
| PubChem CID | 24261 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28112210 |
| Tariff Code | 2811220040 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
Hazard statements
- EUH066 Repeated exposure may cause skin dryness or cracking
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H372 Causes damage to organs through prolonged or repeated exposure
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is this silica gel used for?
It is used as a desiccant and moisture indicator in packaging, laboratories, and industrial applications to maintain dry conditions.
What is the chemical formula and molecular weight?
The formula is SiO2 with a molecular weight of 60.08 g/mol.
How should it be stored?
Store at ambient temperature, away from moisture and direct sunlight.
What grade is available?
Available as an indicating grade with orange to colourless beads, pore diameter 20–30 Å.
Can Molekula supply it in bulk?
Yes, Molekula can supply silica gel in bulk quantities upon request.
What documentation comes with the order?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) compliant with GHS standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.