Promethazine hydrochloride

Methyl methacrylate
3,3′,4,4′-Benzophenonetetracarboxylic dianhydride

Promethazine hydrochloride paramete

CAS No.: 58-33-3
MF: C17H21ClN2S
Place of Origin: Shandong, China
Grade Standard: Medicine Grade
Brand Name: Lookchemical
Purity: 99%
Shelf life: 2 years
Appearance: White Crystalline Powder
Melting point: 230-232C
Storage: Refrigerator
EINECS No.: 200-375-2
Type: Auxiliaries and Other Medicinal Chemicals, API
Usage: Animal Pharmaceuticals
CAS: 58-33-3
Package: 25kg/drum
MW: 320.88
Flash point: 9℃
Density: 1.131 G/cm3


Items Specifications Results
Appearance White to whitish crystal powder Conforms
Loss on drying NMT0.5% 0.33%
Residue on ignition NMT0.1% Conforms
Heavy metal NMT20ppm Conforms
Assay(HPLC) NLT99.5% 99.77%
Related substances NMT0.5% 0.23%
Single impurity NMT0.1% 0.07%


1.Applicable to various allergic diseases and pregnancy vomiting.

2.It can competitively block the Hl receptors in the group and produce antihistamine effect, can resist the telangiectasia caused by histamine, reduce its permeability, and relieve the asthma caused by bronchial smooth muscle contraction, which is stronger and lasting than diphenhydramine hydrochloride

Product service

1. Certificate Of Analysis (COA)

2. Material Safety Data Sheet (MSDS)

3. Route of synthesis (ROS)

4. Method of Aanlysis (MOA)

5. Nuclear Magnetic Resonance (NMR)

6. Packing pictures and loading video before loading

7. Free Sample

8. Factory audit


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.

After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Q1: Do you accept sample order?
A:  We will make samples before mass production, and after sample approved, we'll begin mass production. Doing 100% inspection during production, then do random inspection before packing.
Q2:  What is our advantage?
A : The series of natural extracted product are all self-developed, produced and tested. Mature production technology, strict cost control, and perfect quality assurance system, ensure the product stability and competitive price.
Q3: What’s your MOQ?
A :  Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q4: Do you supply product report?
A : Yes. We'll give you product analysis report before shipping.
 Q5: Is there a discount?
A :  Different quantity has different discount.
Q6: Can we visit your factory?
A :  Yes. Welcome to visit.
Q7: How to confirm the Product Quality before placing orders?
A :  You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.


H301 (11.63%): Toxic if swallowed [Danger Acute toxicity, oral]

H302 (88.37%): Harmful if swallowed [Warning Acute toxicity, oral]

H315 (67.44%): Causes skin irritation [Warning Skin corrosion/irritation]

H317 (96.51%): May cause an allergic skin reaction [Warning Sensitization, Skin]

H318 (32.56%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

H319 (66.28%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

H332 (63.95%): Harmful if inhaled [Warning Acute toxicity, inhalation]

H335 (66.28%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

H411 (96.51%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]


Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.



Packing can be conducted according to customers' requirements.

Delivery detail

   [Delivery] 5 working days after payment.

Promethazine hydrochloride picture

Packaging and shipping

Honor Certificate

Professional team