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Home > Inorganic Chemistry > Inorganic Salts > Ammonium chromate ((NH4)2CrO4) for Sale > Ammonium Chromium(III) Sulfate Dodecahydrate 98% Purity CAS 7788-98-9 High Purity Chrome Alum for Textile Dyeing, Leather Tanning, and Analytical Chem
Ammonium Chromium(III) Sulfate Dodecahydrate 98% Purity CAS 7788-98-9 High Purity Chrome Alum for Textile Dyeing, Leather Tanning, and Analytical Chem buy - large image1
Ammonium Chromium(III) Sulfate Dodecahydrate 98% Purity CAS 7788-98-9 High Purity Chrome Alum for Textile Dyeing, Leather Tanning, and Analytical Chem buy - image1
Ammonium Chromium(III) Sulfate Dodecahydrate 98% Purity CAS 7788-98-9 High Purity Chrome Alum for Textile Dyeing, Leather Tanning, and Analytical Chem buy - image2
Ammonium Chromium(III) Sulfate Dodecahydrate 98% Purity CAS 7788-98-9 High Purity Chrome Alum for Textile Dyeing, Leather Tanning, and Analytical Chem buy - image3
Ammonium Chromium(III) Sulfate Dodecahydrate 98% Purity CAS 7788-98-9 High Purity Chrome Alum for Textile Dyeing, Leather Tanning, and Analytical Chem buy - image4
Ammonium Chromium(III) Sulfate Dodecahydrate 98% Purity CAS 7788-98-9 High Purity Chrome Alum for Textile Dyeing, Leather Tanning, and Analytical Chem buy - image5
Ammonium Chromium(III) Sulfate Dodecahydrate 98% Purity CAS 7788-98-9 High Purity Chrome Alum for Textile Dyeing, Leather Tanning, and Analytical Chem buy - image6

Ammonium Chromium(III) Sulfate Dodecahydrate 98% Purity CAS 7788-98-9 High Purity Chrome Alum for Textile Dyeing, Leather Tanning, and Analytical Chem

TDS

Unit Price:

$30-35/KG FOB

Get Latest Price
CAS No.:

7788-98-9

Grade:

Reagent Grade

Content:

99%

Port:

qingdao

Brand:

//

Packaging:

25g/bottle, 100g/bottle, 500g/bottle, 1kg/bag

Price valid (until):

2026-09-11

Company Type:
Trader
Location:
China
Qualification:
Main Products:

3-(1-Naphthoyl)indole

  • Product Description

  • Seller Information

  • Description

    —— Product Specifications ——

    Shop Ammonium Chromium(III) Sulfate Dodecahydrate 98% Purity CAS 7788-98-9 High Purity Chrome Alum for Textile Dyeing, Leather Tanning, and Analytical Chem-Detailed Image 1

    —— Product Detail ——


    Product Overview

    Ammonium chromium(III) sulfate dodecahydrate (chrome alum) is an inorganic compound with the molecular formula NH₄Cr(SO₄)₂·12H₂O and a molecular weight of 478.34 g/mol. This purple to dark purple crystalline powder is a widely used chromium salt in various industrial and research applications. The compound is used as a mordant in textile dyeing, in leather tanning processes, and as a reagent in analytical chemistry. Its excellent water solubility and chromium content make it valuable in both industrial and laboratory settings.

    Synthetic Process

    Ammonium chromium(III) sulfate is manufactured through the following routes:

    • Reaction of chromium(III) sulfate with ammonium sulfate: Chromium(III) sulfate is reacted with ammonium sulfate in aqueous solution to form the double salt.

    • Crystallization: The product is crystallized from aqueous solution to obtain the dodecahydrate form.

    Mechanism of Action / Application Principles

    • Textile Dyeing: Used as a mordant to fix dyes to fibers.

    • Leather Tanning: Used in chrome tanning processes for leather production.

    • Analytical Chemistry: Used as a reagent in various analytical procedures.

    Quality Specifications



    Parameter Specification
    Assay (NH₄Cr(SO₄)₂·12H₂O) ≥98.0%
    Appearance Purple to dark purple crystalline powder
    pH (5% solution) 2.5 - 3.5
    Loss on Drying ≤5.0%
    Insoluble Matter ≤0.05%

    Each batch is accompanied by a Certificate of Analysis (COA).

    Packaging & Storage

    • Research quantities: 25g, 100g HDPE bottles

    • Bulk quantities: 500g, 1kg double-layer polyethylene bags

    Storage conditions: Store in a cool, dry place in tightly sealed containers, protected from moisture. Under recommended conditions, shelf life is 36 months.


    C ompany Profile ——


     ,

    Shop Amberlite IR-120 Cation Exchange Resin Sodium Form CAS 9002-23-7 High Purity Strong Acid Cation Exchange Resin for Water Softening, Demineralization,-Detailed Image 2

    Jinan Topfull Chemical Co., Ltd. is an international company rooted in China, specializing in the export of chemical products.

    Our company is committed to making every effort to provide ideal chemical products to potential customers worldwide, including but not limited to: organic/inorganic reagents, biological reagents, plant extracts, pharmaceutical intermediates, active pharmaceutical ingredients (APIs), reference standards, reference substances, peptides, and more. Meanwhile, we have established long-term and stable cooperative relationships with university laboratories and off-campus research institutions, enabling us to offer tailored product services based on customers' actual needs.

    We currently support customized services for most product categories, with supply quantities ranging from milligram (mg), gram (g) to kilogram (kg) levels, as well as wholesale. Product purity covers the full spectrum from 90% to 99.9%, providing customers with one-stop convenient services.

    To date, our products have been exported to developed countries such as the United States, Australia, Canada, Mexico, as well as EU member states including France, Germany, and many other countries and regions such as Nigeria, Ghana, Southeast Asia, and other parts of Asia. Our product quality and services have consistently received high praise.

    Looking ahead, our company will continue to serve as a bridge connecting China and the world, delivering high-quality products and services to global customers.

     

    Shop Amberlite IR-120 Cation Exchange Resin Sodium Form CAS 9002-23-7 High Purity Strong Acid Cation Exchange Resin for Water Softening, Demineralization,-Detailed Image 3

    Shop Amberlite IR-120 Cation Exchange Resin Sodium Form CAS 9002-23-7 High Purity Strong Acid Cation Exchange Resin for Water Softening, Demineralization,-Detailed Image 4 

    —— Q&A ——

    Q1: How to confirm the product quality before placing orders?
    A: By sending you available samples. Or if you have special requirements for the goods, we can prepare samples according to your requirements for confirmation.

    Q2: Can you supply free samples?
    A: Yes, we can provide a free sample, but the shipping cost will be paid by the customers. You can either pay the shipping cost or arrange a courier to collect the samples.

    Q3: How do you treat quality complaints?
    A: All our products are strictly tested by our QC and confirmed by QA; unqualified material will not be released to customers. If any quality problem is confirmed to be caused by us, we will replace the goods or refund your payment immediately.

    Q4: What is your MOQ? Is there a discount?
    A: For highvalue products, our MOQ starts from 1g and generally starts from 10g. For other lowprice products, our MOQ starts from 100g and 1kg.
    Q: Is there a discount?
    A: Yes, for larger quantities, we always support with better prices.

    Q5: How to start orders or make payments?
    A: You can send us your Purchase Order (if your company has one), or just send a simple confirmation by email or via Trade Manager. We will then send you a Proforma Invoice with our bank details for your confirmation, and you can make payment accordingly. If you have other preferred payment methods, we are open to discussion and negotiation.



    ECHEMI Editorial Reference
    Ammonium chromate has an eye-catching appearance, appearing in the form of bright yellow crystals that shimmer with enticing light in the sun. Not only that, it also displays a vibrant yellow in solution, as if it were a continuation of the sun's light, giving a warm and lively feeling. Furthermore, when you approach it, you can also feel a unique ammonia smell, which reminds people of the common chemicals used in laboratories. The chemical formula of this compound is (NH4)2CrO4, which is like its identity card, uniquely and accurately identifying it. Its CAS number, also known as the chemical substance registration number, is 7788-98-9, which is a universal identifier used internationally, allowing chemists worldwide to find it accurately. From a chemical perspective, its molecular formula can be written as CrH2O4·2H3N, which is like its inner code, revealing its molecular structure. It has many nicknames because it has many chemical properties, and people have given it different names based on its different uses and characteristics. For example, it can be called the ammonium salt of potassium dichromate (H2CrO4) (1:2) because of its structure containing potassium dichromate; it can also be called the di-ammonium salt of potassium dichromate (H2CrO4), because its molecule contains two ammonium ions. It can also be called ammonium hexachromate, because the chromium element is in a hexavalent state; it can also be called neutral ammonium chromate, because its properties in solution are neutral; it can also be called ammonium chromate ((NH4)2CrO4), because its main component is ammonium and chromic acid; it can also be called di-ammonium chromate, because its molecule contains a chromic acid and two ammonium ions; it can also be called ammonium dichromate, because its structure contains chromic acid; it can also be called di-ammonium chromate ((NH4)2CrO4), because its main component is ammonium and chromic acid.

    Certificates
    • Ammonium Chromium(III) Sulfate Dodecahydrate 98% Purity CAS 7788-98-9 High Purity Chrome Alum for Textile Dyeing, Leather Tanning, and Analytical Chem Certificates 1 TDS

    Basic Info
    Product Name:

    Ammonium chromate ((NH4)2CrO4)

    Other Name:

    Chromic acid (H2CrO4),ammonium salt (1:2);Chromic acid (H2CrO4),diammonium salt;Ammonium chromate(VI);Ammonium chromate;Neutral ammonium chromate;Ammonium chromate ((NH4)2CrO4);Diammonium chromate;Chromic acid ammonium salt;Diammonium chromate ((NH4)2CrO4);50929-82-3

    CAS No.:

    7788-98-9

    Molecular Formula:

    CrH2O4.2H3N

    InChIKeys:

    InChIKey=FEIXNIOTSKFSAZ-UHFFFAOYSA-L

    Molecular Weight:

    152.07

    Exact Mass:

    151.98900

    EC Number:

    232-138-4

    UNII:

    X7I33TTT6D

    Categories:

    Inorganic Salts

    Characteristics
    PSA:

    81.08000

    XLogP3:

    0.05660

    Appearance:

    Yellow-orange Crystalline

    Density:

    1.866 g/cm3

    Melting Point:

    185 °C (decomp)

    Water Solubility:

    soluble in water.Slightly soluble in liquid ammonia, acetone, methanol.Insoluble in ethanol.H2O: 1 M at 20 °C, clear, yellow

    Toxicity:

    Reference value: peritoneal-rat LD50: 57 mg/kg; peritoneal-mouse LD50: 32 mg/kg

    Flammability characteristics:

    High temperature produces toxic chromium oxide, nitrogen oxides and ammonia fumes

    Hazard Identification

    Classification of the substance or mixture

    Skin corrosion, Sub-category 1B

    Skin sensitization, Category 1

    Respiratory sensitization, Category 1

    Carcinogenicity, Category 1B

    Hazardous to the aquatic environment, short-term (Acute) - Category Acute 1

    Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 1

    GHS label elements, including precautionary statements

    Pictogram(s)
    Signal word

    Danger

    Hazard statement(s)

    H272 May intensify fire; oxidizer

    H314 Causes severe skin burns and eye damage

    H317 May cause an allergic skin reaction

    H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled

    H350 May cause cancer

    H410 Very toxic to aquatic life with long lasting effects

    Precautionary statement(s)
    Prevention

    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/hearing protection/...

    P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

    P272 Contaminated work clothing should not be allowed out of the workplace.

    P284 [In case of inadequate ventilation] wear respiratory protection.

    P203 Obtain, read and follow all safety instructions before use.

    P273 Avoid release to the environment.

    Response

    P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

    P363 Wash contaminated clothing before reuse.

    P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

    P316 Get emergency medical help immediately.

    P321 Specific treatment (see ... on this label).

    P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

    P302+P352 IF ON SKIN: Wash with plenty of water/...

    P333+P317 If skin irritation or rash occurs: Get medical help.

    P362+P364 Take off contaminated clothing and wash it before reuse.

    P342+P316 If experiencing respiratory symptoms: Get emergency medical help immediately.

    P318 IF exposed or concerned, get medical advice.

    P391 Collect spillage.

    Storage

    P405 Store locked up.

    Disposal

    P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

    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.

  • Seller Information
    Business Type:

    Trader

    Main Products:

    3-(1-Naphthoyl)indole

    Location:

    RONGSHENG BEIYUANDAJIE 9, LICHENG DISTRICT,JINAN, SHANDONG CHINA

    Payment Terms:

    TT against copy of documents,TT against B/L draft before shipment,100% TT in advance

    Year of Establishment:

    2022

    Jinan Topfull Chemical Co., Ltd. is a global chemical Industrial and focuses on advanced chemical technology. Specialized in Cosmetic materials, water treatment, fine chemicals and so on. We are looking forward to working together with the people of all circles at home and abroad to seek common development!
  • Country Product Purchase Quantity Date Posted
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