Calcium Chloride CaCl₂ · Anhydrous 94–97% · Prills & Powder
The 94–97% anhydrous grade US industry orders by the SuperSack — prills, mini-pellets or powder, for ice melt, dust control, completion brine and concrete acceleration.
Chelora Chemicals is a calcium chloride supplier and sourcing partner serving highway departments, oilfield service companies, concrete producers and food processors across the United States, with a batch COA and SDS on every consignment.
- CAS Number
- 10043-52-4
- EC Number
- 233-140-8
- Chemical name
- Calcium chloride, anhydrous
- Molecular formula
- CaCl₂
- Molecular weight
- 110.98 g/mol
- Assay
- 94–97% w/w
- Forms supplied
- Prills · mini-pellets · powder
- Transport
- Not DG regulated
- HS Code
- 2827 20
Note: calcium chloride is strongly hygroscopic and dissolves exothermically. Keep packs sealed and dry, and add it to water rather than the reverse. It is not classed as dangerous goods for transport, but confirm the position for your route with your freight forwarder.
From limestone to 94–97% prills
Calcium chloride is made by neutralizing limestone with hydrochloric acid, then evaporating and prilling. Both the feedstock acid and the finished salt come from the same desk.
Second route: recovered as a Solvay process co-product · also produced from natural brine in some US basins · lower-strength 77–80% flake is the dihydrate form of the same salt
What calcium chloride is used for
Calcium chloride is a white to off-white hygroscopic salt supplied as prills, mini-pellets or powder at 94 to 97% CaCl₂ — the anhydrous grade. It pulls moisture from the air aggressively, dissolves with a strong release of heat, and depresses the freezing point of water further than sodium chloride can.
Those three properties account for almost all of its use. The heat of solution and the low eutectic make it the fastest-acting ice melt, working well below where rock salt stops. The hygroscopicity makes it the standard dust control and road stabilization treatment. And the dense brine it forms is the backbone of oil well completion fluids. It also accelerates concrete set, serves as a desiccant, and in food grade firms vegetables and sets cheese curd.
Forms and grades we quote against
- Anhydrous 94–97% prills and mini-pellets. The standard US industrial grade, dust-free and free-flowing.
- Anhydrous 94–97% powder. Where a faster dissolution rate or dry blending matters more than flow.
- Technical and food grade. Food grade to the Food Chemicals Codex for cheese, brewing and vegetable firming.
- Related chloride and brine chemistry from the same desk: hydrochloric acid and potassium chloride.
Handling character
Calcium chloride is a low-hazard solid that irritates eyes and generates heat on contact with water. Full handling detail is in the Safety section below.
| Parameter | Typical value |
|---|---|
| Appearance | White to off-white prills, pellets or powder |
| CaCl₂ assay | 94.0–97.0% w/w |
| Alkali chlorides (as NaCl) | 5.0% max |
| Magnesium (as MgCl₂) | 0.5% max |
| Alkalinity (as Ca(OH)₂) | 0.25% max |
| Water insolubles | 0.25% max |
| Prill size | Per agreed sieve specification |
Important: the figures above are indicative of commercial material and are offered for planning only. The batch certificate of analysis is the governing document.
| Property | Value |
|---|---|
| Physical state | Hygroscopic crystalline solid |
| Melting point | 772 °C (anhydrous) |
| Bulk density | ≈ 0.8–1.0 g/cm³ depending on form |
| Water solubility | Very soluble — ≈ 745 g/L at 20 °C |
| Heat of solution | Strongly exothermic |
| Eutectic | ≈ −51 °C at 30% solution |
| Hygroscopicity | Deliquescent — absorbs moisture from air |
Physical constants compiled from public reference data for CAS 10043-52-4 at the anhydrous grade and rounded for readability. Treat them as orientation, not as a specification.
Where US industry puts calcium chloride to work
Ice melt, dust control, completion brine, concrete and food processing — five markets, one salt.
Ice melt & de-icing
The fastest-acting de-icer, working well below the point where rock salt stops. The heat of solution starts the melt immediately.
- 94–97% prills and mini-pellets
- 50 lb bags and 2,400 lb SuperSacks
- Seasonal contract supply
Dust control & road stabilization
Draws moisture from the air to hold unpaved road surfaces damp, cutting dust and binding the aggregate.
- Prill or flake as your spreader needs
- Bulk and bagged supply
- Scheduled seasonal call-off
Oil well completion brine
Dense clear brine for completion and workover fluids, and a density builder in drilling mud.
- Oilfield grade to API practice
- Bulk delivery to field location
- Technical desk review on request
Concrete acceleration
Shortens set time and raises early strength in cold-weather placement, within code limits on chloride content.
- Consistent assay lot to lot
- Documented batch traceability
- Chloride limits confirmed before supply
Food processing · FCC grade
Firms canned vegetables, sets cheese curd, adjusts brewing water and acts as a processing aid.
- Food Chemicals Codex specification
- Full analytical documentation
- Trial quantities for qualification
Desiccant & refrigeration brine
Dries gases and enclosed spaces, and serves as a secondary refrigerant brine in industrial cooling.
- Powder or prill as required
- Moisture-barrier packaging
- Second source held in reserve
Delivered to US plants and ports
We ship calcium chloride to nominated delivery points across the United States. The regions below are destinations we serve — Chelora Chemicals is a sourcing and supply partner, not a US manufacturer, and does not hold US stock.
Gulf Coast
The largest US chemical cluster, and the usual entry point for bulk consignments.
- Houston & Galveston, TX
- New Orleans & Baton Rouge, LA
- Mobile, AL
Northeast
Container and bulk delivery into the mid-Atlantic and New England manufacturing belt.
- Newark & Elizabeth, NJ
- Philadelphia, PA
- Boston, MA
Southeast
Port-side delivery for the Carolinas, Georgia and Florida processing plants.
- Savannah, GA
- Charleston, SC
- Jacksonville, FL & Norfolk, VA
Midwest & Great Lakes
Inland rail and truck forwarding from the nearest coastal port to the industrial Midwest.
- Chicago, IL
- Detroit, MI
- Cleveland & Columbus, OH
West Coast
Pacific routing for West Coast processors and formulators.
- Los Angeles & Long Beach, CA
- Oakland, CA
- Seattle & Tacoma, WA
Southwest & Mountain
Inland delivery to interior states, forwarded from the Gulf or Pacific gateway.
- Dallas–Fort Worth, TX
- Phoenix, AZ
- Denver, CO
Importing into the United States
Calcium chloride is a TSCA-regulated chemical substance. Under TSCA section 13 the importer of record, or its authorized agent, must certify to US Customs and Border Protection that each shipment either complies with TSCA or is not subject to it. We confirm the substance's TSCA Inventory status and agree in writing who files that certification before the first consignment moves.
Which party carries that duty follows the Incoterm. On FOB, CFR or CIF terms it is usually the US buyer; on DDP terms it can be the seller or its agent. Safety data sheets and labels are supplied to OSHA's updated Hazard Communication Standard, and the non-hazardous transport documentation is prepared before booking.
| Item | How it works |
|---|---|
| Delivery points | Any nominated US plant, terminal or port of discharge |
| Incoterms quoted | FOB · CFR · CIF · DDP |
| Importer of record | Agreed in writing before the first shipment |
| TSCA certification | Section 13 positive certification filed at entry |
| Documentation | Batch COA, SDS, packing list, certificate of origin |
| Pack formats | 50 lb bags, SuperSacks or bulk |
Note: regional coverage describes where we deliver, not where we hold inventory. Lead time depends on producer scheduling and ocean transit to your nominated US port — we confirm both in the quotation.
How we supply calcium chloride
Chelora Chemicals is a calcium chloride supplier and sourcing partner, not a manufacturer. On a commodity salt the variables that actually bite are assay consistency, prill size and whether the pack survives humidity between the plant and your spreader — that shapes how we select producers on this line.
We place your order with whichever qualified producer best matches your required grade, your price point and your delivery window, and confirm US import requirements before booking.
We keep a second qualified source on this line, so a single-plant disruption never becomes your production problem — which matters most when a cold snap moves the whole market at once.
- Assay band confirmed lot to lot. 94% and 97% behave differently per ton applied, so we hold the band you specify rather than the range.
- Prill size agreed before we quote. A spreader calibrated for mini-pellets will not meter powder, so the sieve specification is part of the order.
- Moisture-barrier packing specified. The salt is deliquescent, so liner and pallet wrap are agreed rather than assumed — particularly for sea freight.
- Seasonal supply planned ahead. Ice-melt and dust-control demand both spike, so contracted tonnage is reserved against your call-off calendar.
- One desk for the chloride set. Order calcium chloride alongside hydrochloric acid and potassium chloride.
- Batch traceability to the producing plant. Full chain of custody documentation on request.
Bagged, SuperSacked or delivered in bulk
50 lb bags, bulk bags or a bulk truck — tell us your spreader, silo or blending arrangement and we will quote to it.
50 lb / 25 kg poly bags
Moisture-barrier bags on stretch-wrapped pallets, the standard retail and contractor unit.
2,400 lb / 1,000 kg FIBC
Liner-fitted bulk bags, the standard US industrial unit for spreader and silo charging.
Bulk truck & rail
Pneumatic or tipping bulk delivery to silo, for high-volume seasonal and oilfield consumption.
Small sealed units
Sealed pails and drums where humidity exposure must be kept to a minimum between uses.
Incoterms to suit you
Quoted on the Incoterm your purchasing team works to, with documentation filed before booking.
Trial / sample quantities
Small packs dispatched for spreader calibration or formulation trials before a commercial order.
Low hazard, but hygroscopic and exothermic
Calcium chloride is one of the lower-hazard products on this site — it is not classed as dangerous goods for transport. The real handling issues are eye irritation from dust, heat released on dissolution, and moisture pickup ruining a pack. The summary below is orientation only — the safety data sheet supplied with your specific batch is the authoritative document.
Classified hazards
H319Causes serious eye irritation.
Exotherm on dissolution. Anhydrous calcium chloride releases substantial heat when it meets water — enough to boil a small volume and spatter hot brine. Always add the solid to water slowly with stirring, never water to the solid, and never in a sealed vessel.
Storage
Store in sealed, moisture-barrier packaging in a dry, covered area off the floor. The salt is deliquescent and will take up water from humid air, caking a pack and eventually turning it to brine. Keep away from zinc and aluminum in damp conditions, and from strong oxidizers.
Handling
Handle with dust control and eye protection; the dust irritates eyes and moist skin. Wear gloves where contact is prolonged. When making up brine, add the solid to water gradually and allow the heat to dissipate before sealing or transferring.
Transport
Calcium chloride is normally not regulated as dangerous goods for road, rail or sea transport, so no UN number applies to the standard grades. We confirm and document the position for your specific shipment, packaging and destination before booking.
Every batch, documented
We verify documentation before dispatch so there are no surprises at your incoming-goods bench.
Specification agreed
Assay band, prill size, alkali chlorides and insolubles confirmed against your process or spreader requirement before order placement.
Producer batch testing
The producing plant tests each batch against the agreed specification before release.
Documentation review
COA, SDS and TSCA certification data checked by our desk, and pack moisture barrier confirmed, before the shipment is booked.
Traceable dispatch
Each shipment is traceable to its producing batch, with full chain-of-custody records on request.
How calcium chloride is made
The main route is neutralization: limestone is dissolved in hydrochloric acid to give a calcium chloride brine, which is purified, evaporated and then prilled or flaked. Prilling the concentrated melt gives the free-flowing 94–97% anhydrous product; stopping at a lower concentration gives 77–80% flake, the dihydrate.
A large volume also arrives as a co-product of the Solvay process for soda ash, where calcium chloride is what remains after the ammonia is recovered. In parts of the US, calcium-rich natural brines are concentrated directly, which is why regional supply and pricing can move independently of the acid route.
Which route a lot came from shows up in the trace profile — alkali chlorides, magnesium and insolubles differ — so we confirm the origin and the specification before quoting.
We do not publish operating process parameters here; this is background only. Full technical documentation accompanies every shipment, and any process-specific detail you need is best confirmed directly with our technical desk.
| Chemical family | Inorganic chloride salt |
|---|---|
| Forms supplied | Prills, mini-pellets, powder (94–97% anhydrous) |
| Related form | 77–80% flake is the dihydrate of the same salt |
| Key properties | Deliquescent; exothermic dissolution; low eutectic |
| Upstream | Limestone and hydrochloric acid |
| Downstream | Ice melt, dust control, completion brine, concrete, food |
The rest of the inorganic and brine range
The feedstock acid, the other chloride salts and the alkalis around them — all supplied from the same desk.
Calcium chloride, answered
What is calcium chloride 94-97% used for?
What is the difference between 94-97% prills and 77-80% flake?
What is the difference between prills, mini-pellets and powder?
Why is calcium chloride better than rock salt for de-icing?
Is calcium chloride hazardous?
Why does calcium chloride cake in the bag?
Do you supply food grade calcium chloride?
What packing do you offer?
Do you supply calcium chloride in the United States?
Do you manufacture this yourself?
Get a quote on calcium chloride
Send us your required assay band, form, pack size, US delivery point and Incoterm. We will come back with a firm quote, lead time and full documentation — and can reserve seasonal tonnage against your call-off calendar.