Tetrakis (hydroxymethyl) Phosphonium Sulfate (THPS) CAS: 55566-30-8

• CAS No.: 55566-30-8
• Formula: C8h24o12p2s
• EINECS: 204-258-7
• Environmental Protection: No
• Color: Colorless
• Kind: Flame Retardant
• Model NO.: 75%
• Appearance: Liquid
• Application: Textile Printing Auxiliary
• Product Name: Tetrakis(Hydroxymethyl)Phosphonium Sulfate
• Synonyms: Thps
• Assay: 75.0% Min
• Usage: Flame Retardant in Textiles
• Transport Package: 250kgs Drum
• Specification: industry grade
• Trademark: SWC
• Origin: P. R. China
• Production Capacity: 100mts Per Month

Product Description

Specification

Product Name: Tetrakis(hydroxymethyl)phosphonium sulfate

Identification
Synonyms THPS; Octakis(hydroxymethyl)diphosphonium sulfate
Molecular Formula C8H24O12P2S
Molecular Weight 406.28
CAS Number 55566-30-8
EINECS/ELINCS 259-709-0
Structure

Properties
Appearance colorless to yellow clear liquid
Melting Point -35 ºC
Solubility soluble in water
Stability stable under ordinary conditions

Item	Specification
Appearance	Colorless to yellow clear liquid
Content	75.0-77.0%
Color (Hazen)	70 max
Density @25 ºC	1.370 - 1.410g/cm3
pH	3.0-6.0
Iron (as Fe)	25ppm max

Application
THPS is used as a flame retardant in textiles, especially cotton and as a cease and rot resistance agent in fabrics. THPS acts as a biocide against SRB (sulfate reducing bacteria known as Desulfuvibrio Desulfuricans) which produces enzymes to accelerate reduction reaction of sulfates to corrosive hydrogen sulfide which causes corrosion of iron material in water system.

Packing and Storage
Packing: In 250kgs net in plastic drum.
Storage: Keep tightly closed.

Safety Information
UN2922 Class8(6.1) PG III
Detailed safety information is contained in each Material Safety Data Sheet, which can be obtained from our company.

Frequently Asked Questions

Q1: May I get one sample before placing order?
Re: Yes, Sample are available. For normal products, samples are for free and you just need to bear the freight; 

For those high value products, you just need to freight and certain product cost. When we both cooperate for 

some times or when you are our VIP customer, free sample will be offered when you need.

Q2: Which payment is available for your company?
Re: T/T, L/C. You can choose the one which is convenient for you. 

Q3: How and when can I get my goods after payment?
Re: For small quantity products, they will be delivered to you by international courier(DHL, FedEx, TNT etc.) 

or by air. Usually it will cost 3-5days that you can get the goods after delivery.For large quantity products,

shipping by see is worthwhile.It will cost days to weeks to come to your destination port, which depends on 

where the port is.

Q4: Is there any possible to use my appointed label or package?
Re: Yes. If needed, we'd like to use label or package according to your requirement. 

Q5: How can you guarantee the goods you offer is qualified? 
Re: We always believe honesty and responsibility are basis of one company, so whatever products we provide 

for you all are qualified. We will have goods tested and provide COA before delivery for sure.