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Magnesium Hydroxide | Cas 1309-42-8 | E528 | Mild pH Adjuster & Magnesium Fortifier buy - large image1

Magnesium Hydroxide | Cas 1309-42-8 | E528 | Mild pH Adjuster & Magnesium Fortifier buy - image1

Magnesium Hydroxide | Cas 1309-42-8 | E528 | Mild pH Adjuster & Magnesium Fortifier

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CAS No.:

1309-42-8

Grade:

Food Grade

Content:

99%

Port:

qingdao

Packaging:

25kgs/bag

Price valid (until):

2024-09-30

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PREMIUM INGREDIENT CO.,LTD

Company Type:

Manufactory

Location:

United Kingdom

Payment Terms:

TT against copy of documents,L/C

Average Lead Time:

80 days

Qualification:

Main Products:

l-lysine monohydrochloride,dl-methionine,n-acetyl-l-cysteine,l-methionine,glycine,l-cysteine hcl monohydrate

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Product Details
Seller Information
Inquiry History

Description

Magnesium Hydroxide

Basic Information

English Name	Magnesium Hydroxide
Synonyms	Magnesium Hydrate, Hydroxide Magnesium
CAS Number	1309-42-8
E Number	E528
EC Number	215-170-3
Molecular Formula	Mg(OH)₂
Molecular Weight	58.32 g/mol
Appearance	White, fine, amorphous powder
Solubility	Very slightly soluble in water
pH	Approximately 9.0 – 10.5 (saturated solution)
Purity	Food grade / Pharmaceutical grade available

Product Overview

Magnesium Hydroxide (Cas No.:1309-42-8, E No.: E528), is a high-purity white fine powder, offered in food grade. It is a mild alkaline mineral that provides gentle pH buffering without sharp pH fluctuation. Widely used as mild pH adjuster, magnesium mineral fortifier and anti-caking agent, it is mainly applied in dietary supplements, multivitamin and mineral premixes, breakfast cereals and powder formulations. It is sparingly soluble in water and keeps stable under normal food processing conditions.

Specification:

Grade	Purity (min)	MgO Content	Moisture	pH	Main Standard
Food Grade	96.0%	65.0%	2.0% max	9.0 – 10.5	FCC / EU Food Additive
Pharmaceutical Grade	98.0%	66.0%	1.5% max	9.5 – 10.5	USP / EP / JP

Character

1.White fine powder, odorless and tasteless.

2.Weak alkaline in aqueous system (pH around 9.5–10.5 for saturated solution), providing gentle and controllable acid neutralization.

3.Strong buffering capacity against acid, avoiding sudden pH jump in food systems.

4.Sparingly soluble in water, mainly suitable for solid, semi-solid and powder formulations rather than clear beverages.

5.Good thermal and storage stability, no strong odor, no harsh irritation.

6.Fine particle size contributes to good dispersion in powder premixes and anti-caking performance.

7.Food grade complies with international standards for pH regulators, mineral fortifiers and anti-caking agents.

Main Functions

1.pH Adjusting & Buffering Function: Acts as mild alkali to adjust and buffer acidity in food systems, avoiding sharp pH fluctuation and improving formulation stability.

2.Magnesium Fortification Function: Provides bioavailable magnesium mineral for nutritional enrichment in food, beverage and dietary supplement formulations.

3.Anti-Caking Function: Prevents powder agglomeration, maintains free-flowing property for mineral premixes, powder drinks and blended powder products.

4.Flavor Stabilizing Function: Neutralizes free acidic substances in powder blends, suppresses unpleasant off-odor formation and stabilizes the original flavor of finished products.

Applications

Food & Dietary Supplement Industry : Magnesium Hydroxide is mainly applied in dietary supplements, multivitamin and mineral powder premixes, breakfast cereals, solid beverages and blended powder products. It serves as a mild pH adjuster to buffer acidity, as a magnesium source for mineral fortification, and as an anti-caking agent to keep powder blends free-flowing during production, filling and storage.

Dairy & Bakery: It is occasionally used as pH regulator and mineral supplement in processed dairy, bakery mixes and infant nutrition products where mild alkalinity is required.

Industrial Field: Industrial grade Magnesium Hydroxide is used in flue gas desulfurization, wastewater treatment and flame retardant applications, with non-food consumption outside our main supply scope.

Packaging & Storage

Packaging: 25kg paper bag / drum with inner PE liner

Storage: Store in cool, dry, ventilated area. Keep sealed. Protect from moisture and direct sunlight.

Magnesium hydroxide
Other names	Magnesium dihydroxide, Milk of magnesia
Chemical formula	Mg(OH)2
CAS Number	1309-42-8
EC Number	215-170-3
E number	E528
Molar mass	58.3197 g/mol
Appearance	White solid
Odor	Odorless
Density	2.3446 g/cm3
Melting point	350 °C (662 °F; 623 K) decomposes
Solubility in water	0.00064 g/100 mL (25 °C), 0.004 g/100 mL (100 °C)

Basic Info

Product Name:

Magnesium hydroxide

Other Name:

Magnesium hydroxide (Mg(OH)2);Magnesium hydroxide;Magnesia Magma;Milk of magnesia;Marinco H 1241;Magnesium dihydroxide;Marinco H;S/G 84;Magnesia hydrate;Kisuma 5A;Ki 22-5B;Kyowamag F;Milmag;Kisuma 4AF;Star 200;Kisuma 7B;Lycal 96HSE;Kisuma 5E;Kisuma 5;Magnesiamaito;Asahi Glass 200-06;Combustrol 500;NF 2000;KX 4S;Kisuma S 4;Versamag;KX 80;KX 8S(A);KX 8S(B);Martinal VPF 8812;Kisuma 5BG;Magstar 10;Kisuma 5B-N;Magnifin H 7;Magnifin H 10;FloMag H;FloMag HUS;Alcanex NHC 25;PT 25ST;Magnesium(II) hydroxide;Zerogen 30F;Magstar 5;Kisuma 3A;Daimushew 6000;Kisuma 5EU;Star Brand 100;Kisuma 5A-N;Magnifin H 5;Magseeds N 1;DP 393;Magnifin H 5KV;Z 00-06H;Star Brand 200;Ebson RF;Zerogen 60;PG 91146;Duhor;Magnifin SE 630;DSB 100;Duhor N;MagneClear 58;Magnifin H 5L;N 3;Kisuma 5AU;Hydrofy G 2.5;N 0;Hydrofy G 1.5;N 0 (curing accelerator);Hydrofy N;MH 95-002;N 1;Mag Chem MH 10;Kisuma 120;Zerogen 51;SP;MS 4;Zerogen 10;Zerogen 10SP;SP (hydroxide);MS 4 (hydroxide);200-06H;VD 650;Kisuma 2;10A;Magseeds N 3;Kisuma;UB 650;FR 20-310;Kisuma KX 4SU;Magseeds N 4;SX 30MS;Finemag MO-T;Finemag SN-L;Odomag;Kisuma 54A;Kisuma 6E;Mint-O-Mag;Phillips Milk of Magnesia Liquid;Lederscon;Phillips Magnesia Tablets;Zerogen 50SP;UD 650;Kisuma 8N;Magshield 98;Kisuma 5L;Apymag AOH 820;Echomag ZL;Burusaito;Zerogen Vertex;Magnifin A;Magstar;Finemag MO;Z 50SP;MH 3;Maglux ST;Maglux;Magnifin H 5HV;Novadol;Kiyouwasuimagu F;FD 905U;12195-86-7;13760-51-5;1395893-88-5

CAS No.:

1309-42-8

Molecular Formula:

H2MgO2

InChIKeys:

InChIKey=VTHJTEIRLNZDEV-UHFFFAOYSA-L

Molecular Weight:

58.31970

Exact Mass:

57.99050

EC Number:

215-170-3

Categories:

Acidity Regulators

Characteristics

PSA:

40.46000

XLogP3:

-0.35360

Appearance:

Odourless, white bulky powder

Density:

2.36 g/cm³

Melting Point:

350 °C (decomp)

Boiling Point:

100ºC at 760mmHg

Flash Point:

will not burn

Water Solubility:

H2O: 5 M HCl: 0.1 M, clear, yellow | 0.9 mg/100 mL (18 ºC)

Storage Conditions:

Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.

Odor:

Odorless

PH:

pH = 9.5-10.5 (aqueous slurry)

See More Magnesium hydroxide Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More Magnesium hydroxide Safety Data Sheet 

Seller Information

Business Type: Manufactory
Main Products: l-lysine monohydrochloride,dl-methionine,n-acetyl-l-cysteine,l-methionine,glycine,l-cysteine hcl monohydrate
Location: dongsheng road
Payment Terms: TT against copy of documents,L/C
Average lead Time: 80 days
Total Annual Revenue: $5 million-$10 million
Total Employees: 5-10
Year of Establishment: 2015

Premium Ingredient specializes in supplying and distributing food & feed amino acids, food additives and functional ingredients for more than a decade.

Our food additives portfolio covers phosphates, acidulants, preservatives, sweeteners, thickeners and leavening agents.

Our functional ingredients include vitamins, mineral products, botanical extracts, nutraceutical ingredients, functional fibers & bulking agents.

We serve over 100 clients across food & beverage, dietary supplement, sports nutrition, personal care, pharmaceutical and animal feed sectors, with products exported to dozens of countries worldwide. All our goods are sourced from top-tier Chinese manufacturers with proven expertise and complete management systems.

◆Amino Acids	◆ phosphates	◆ acidulants
◆ preservatives	◆ sweeteners	◆ functional fiber&bulking agent
◆ thickeners	◆ Leavening agents	◆ mineral products
◆ Botanical extracts	◆ vitamins	◆ nutritional products

Backed by over 10 years of industry experience, we provide one-stop-shop solutions combining high-grade products, prompt communication, on-time delivery and real-time market intelligence. Thanks to our long-term deep-rooted partnerships with source manufacturers, we can guarantee sufficient inventory, stable pricing and fast shipment.

Our third-party certifications include ISO9001, ISO14001, HACCP, HALAL, KOSHER, GMP, FAMI-QS and more. You can count on Premium Ingredient as your trusted global raw material supplier.

------------------------------------- Mission------------------------------------

Acting as a bridge between reliable Chinese manufacturers and global buyers, we carefully select partner factories with mature production capabilities and sound management systems. We deliver not only premium-quality raw materials, but also value-added services including market trend updates, supply chain risk alerts, product formulation consultation, consolidated sample shipment and full document support for import compliance. We timely forward overseas customers’ requirements to our partner factories to support product upgrading and achieve mutual growth.

-------------------------------------Our Quality------------------------------------

Our Quality

As a professional ingredient supplier, we do not operate manufacturing facilities. Instead, we build robust quality‑assurance workflows across our whole supply chain to safeguard consistent product performance for every shipment

Strict Supplier Due‑Diligence

Before entering any partnership, we carry out on-site factory visits and assess industry reputation, followed by multi-stage qualification reviews. We validate production qualifications, export track records, quality management systems and complete certification packages. New suppliers must pass sample evaluation, and only fully vetted top-tier factories are admitted to our approved supplier pool

Batch‑by‑batch Document Verification

For every order, we cross‑check factory‑issued test documents against agreed specifications including FCC, USP, EP, AJI, CP or your customized requirements. We will not forward documents to customers until key indicators are fully aligned with specifications. This step avoids inconsistent or mismatched documentation common in raw‑material trade.

Independent Third‑party Testing Coordination

Upon client request, we can arrange independent laboratory inspections from recognized third‑party institutions. We manage sample delivery, test protocol communication and report follow‑up to support your market compliance needs.

Quality Closure & Continuous Improvement

We keep traceable records for all delivered batches. If any quality concern arises, we act as your single point‑of‑contact to trace root causes with source factories, drive corrective actions and deliver practical resolution plans. Client feedback is systematically collected to optimize our supplier management and document‑review procedures.

We provide a comprehensive set of compliance documents to support your import and registration work. Our available documentation includes but is not limited to:

★ ISO Certification ★ Halal Certificate

★ Kosher Certificate ★ IP certificate

★ Haccp certificate ★ Allergens with Glutens

★ GRAS Statement ★ HACCP Program

★ BSE/TSE Statement ★ Certificate of Analysis

★ Country of Origin Certificate ★ Material Safety Data Sheet

★ Flow Chart (product processing) ★ Food Grade Certificate

★ Nutritional Information ★ GMO Statement

★ Specification Sheet

Inquiry History

22 Inquiries

Country	Product	Purchase Quantity	Date Posted
Germany	Magnesium hydroxide	1000 MT	Oct 12, 2026
India	Magnesium Hydroxide	3.00 MT	Aug 3, 2026
Turkey	Magnesium hydroxide	200 KG	Jul 10, 2026
Egypt	Magnesium Hydroxide	1.00 20' Fcl	Jun 22, 2026
Uzbekistan	magnesium hydroxide	25 KG	Apr 23, 2026
Pakistan	Magnesium Hydroxide USP Micronized Grade	1000 KG	Jan 21, 2026
India	Magnesium Hydroxide	800.00 KG	Jan 12, 2026
Pakistan	Magnesium hydroxide	12500 KG	Dec 8, 2025
Poland	magnesium hydroxide	40 MT	Jul 21, 2025
India	Magnesium hydroxide	17 MT	Apr 28, 2025
Norway	Magnesium Hydroxide	1000.00 MT	Apr 7, 2025
India	Magnesium Hydroxide	50.00 TON	Dec 9, 2024
Bangladesh	Magnesium Hydroxide	1000 KG	Nov 20, 2024
Italy	Magnesium hydroxide	5 KG	Sep 10, 2024
India	Magnesium hydroxide	25 KG	Aug 31, 2024
India	Magnesium Hydroxide	10.00 TON	Jun 11, 2024
India	MAGNESIUM HYDROXIDE USP/BP	10.00 TON	May 24, 2024
United Kingdom	Magnesium Hydroxide	1 KG	Apr 30, 2024
United Kingdom	magnesium hydroxide	2 MT	Mar 23, 2024
Thailand	Magnesium hydroxide SLURRY 53% in white powdery form	27 20' Fcl	Feb 22, 2024

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