You are just making an assertion. The apocrypha were only considered "canonical" for the purposes of edification of morals, and, even that, not all even bothered to use them for that purpose. Consistently, the position is that they are not to be used for the purposes of creating doctrine or confirming matters of the faith, due to their dubious status. This is indeed the consensus, beyond any doubt:
Athanasius on the apocrypha:
“But for the sake of greater exactness I add this also, writing under obligation, as it were. There are other books besides these, indeed not received as canonical but having been appointed by our fathers to be read to those just approaching and wishing to be instructed in the word of godliness: Wisdom of Solomon, Wisdom of Sirach, Esther, Judith, Tobit, and that which is called the Teaching of the Apostles, and the Shepherd. But the former [standard new and old testament canon], my brethren, are included in the Canon, the latter being merely read.” (Thirty-Ninth Festal Epistle, A.D. 367.)
Rufinus on the Apocrypha:
“But it should be known that there are also other books which our fathers call not ‘Canonical’ but ‘Ecclesiastical:’ that is to say, Wisdom, called the Wisdom of Solomon, and another Wisdom, called the Wisdom of the Son of Syrach, which last-mentioned the Latins called by the general title Ecclesiasticus, designating not the author of the book, but the character of the writing. To the same class belong the Book of Tobit, and the Book of Judith, and the Books of the Maccabees. In the New Testament the little book which is called the Book of the Pastor of Hermas (and that) which is called the Two Ways, or the Judgment of Peter; all of which they would have read in the Churches, but not appealed to for the confirmation of doctrine. The other writings they have named ‘Apocrypha.’ These they would not have read in the Churches. These are the traditions which the Fathers have handed down to us, which, as I said, I have thought it opportune to set forth in this place, for the instruction of those who are being taught the first elements of the Church and of the Faith, that they may know from what fountains of the Word of God their draughts must be taken” (Philip Schaff and Henry Wace, Nicene and Post Nicene Fathers (Grand Rapids: Eerdmans, 1953), Rufinus, Commentary on the Apostles’ Creed 36, p. 557-558.).
Jerome on the Apocrypha
“These instances have been just touched upon by me (the limits of a letter forbid a more discursive treatment of them) to convince you that in the holy scriptures you can make no progress unless you have a guide to shew you the way...Genesis ... Exodus ... Leviticus ... Numbers ... Deuteronomy ... Job ... Jesus the son of Nave ... Judges ... Ruth ... Samuel ... The third and fourth books of Kings ... The twelve prophets whose writings are compressed within the narrow limits of a single volume: Hosea ... Joel ... Amos ... Obadiah ... Jonah ... Micah ... Nahum ... Habakkuk ... Zephaniah ... Haggai ... Zechariah ... Malachi ... Isaiah, Jeremiah, Ezekiel, and Daniel ... Jeremiah also goes four times through the alphabet in different metres (Lamentations)... David...sings of Christ to his lyre; and on a psaltry with ten strings (Psalms) ... Solomon, a lover of peace and of the Lord, corrects morals, teaches nature (Proverbs and Ecclesiastes), unites Christ and the church, and sings a sweet marriage song to celebrate that holy bridal (Song of Songs) ... Esther ... Ezra and Nehemiah.
You see how, carried away by my love of the scriptures, I have exceeded the limits of a letter...The New Testament I will briefly deal with. Matthew, Mark, Luke and John ... The apostle Paul writes to seven churches (for the eighth epistle - that to the Hebrews - is not generally counted in with the others) ... The Acts of the Apostles ... The apostles James, Peter, John and Jude have published seven epistles ... The apocalypse of John ...I beg of you, my dear brother, to live among these books, to meditate upon them, to know nothing else, to seek nothing else (Philip Schaff and Henry Wace, Nicene and Post Nicene Fathers (Grand Rapids: Eerdmans, 1953, Volume VI, St. Jerome, Letter LIII.6-10).
As, then, the Church reads Judith, Tobit, and the books of Maccabees, but does not admit them among the canonical Scriptures, so let it also read these two volumes (Wisdom of Solomon and Eccesiasticus) for the edification of the people, not to give authority to doctrines of the Church...I say this to show you how hard it is to master the book of Daniel, which in Hebrew contains neither the history of Susanna, nor the hymn of the three youths, nor the fables of Bel and the Dragon...(Ibid., Volume VI, Jerome, Prefaces to Jerome’s Works, Proverbs, Ecclesiastes and the Song of Songs; Daniel, pp. 492-493).
Let her treasures be not silks or gems but manuscripts of the holy scriptures...Let her begin by learning the psalter, and then let her gather rules of life out of the proverbs of Solomon...Let her follow the example set in Job of virtue and patience. Then let her pass on to the gospels...the Acts of the Apostles and the Epistles...let her commit to memory the prophets, the heptateuch, the books of Kings and of Chronicles, the rolls also of Ezra and Esther. When she has done all these she may safely read the Song of Songs...Let her avoid all apocryphal writings, and if she is led to read such not by the truth of the doctrines which they contain but out of respect for the miracles contained in them; let her understand that they are not really written by those to whom they are ascribed, that many faulty elements have been introduced into them, and that it requires infinite discretion to look for gold in the midst of dirt (Ibid., Letter CVII.12).
What the Savior declares was written down was certainly written down. Where is it written down? The Septuagint does not have it, and the Church does not recognize the Apocrypha. Therefore we must go back to the book of the Hebrews, which is the source of the statements quoted by the Lord, as well as the examples cited by the disciples...But he who brings charges against me for relating the objections that the Hebrews are wont to raise against the story of Susanna, the Song of the Three Children, and the story of Bel and the Dragon, which are not found in the Hebrew volume, proves that he is just a foolish sycophant...The apostolic men use the Hebrew Scripture. It is clear that the apostles themselves and the evangelists did likewise. The Lord and Savior, whenever He refers to ancient Scripture, quotes examples from the Hebrew volumes...We do not say this because we wish to rebuke the Septuagint translators, but because the authority of the apostles and of Christ is greater...”(The Fathers of the Church (Washington: Catholic University, 1965), Volume 53, Saint Jerome, Against Rufinus, Book II.27, 33, pp. 151, 158-160).
Cardinal Cajetan calls them not “canonical for the confirmation of the faith,” but “canonical” only in a certain sense for the “edification of the faithful.”
“Here we close our commentaries on the historical books of the Old Testament. For the rest (that is, Judith, Tobit, and the books of Maccabees) are counted by St. Jerome out of the canonical books, and are placed amongst the apocrypha, along with Wisdom and Ecciesiasticus, as is plain from the Protogus Galeatus. Nor be thou disturbed, like a raw scholar, if thou shouldest find anywhere, either in the sacred councils or the sacred doctors, these books reckoned as canonical. For the words as well of councils as of doctors are to be reduced to the correction of Jerome. Now, according to his judgment, in the epistle to the bishops Chromatius and Heliodorus, these books (and any other like books in the canon of the Bible) are not canonical, that is, not in the nature of a rule for confirming matters of faith. Yet, they may be called canonical, that is, in the nature of a rule for the edification of the faithful, as being received and authorised in the canon of the Bible for that purpose. By the help of this distinction thou mayest see thy way clearly through that which Augustine says, and what is written in the provincial council of Carthage.” (Cardinal Cajetan, “Commentary on all the Authentic Historical Books of the Old Testament,” cited by William Whitaker in “A Disputation on Holy Scripture,” Cambridge: Parker Society (1849), p. 424)
Official prefaces to Latin translations, endorsed by Popes, of the scripture making the same distinction:
“At the dawn of the Reformation the great Romanist scholars remained faithful to the judgment of the Canon which Jerome had followed in his translation. And Cardinal Ximenes in the preface to his magnificent Polyglott Biblia Complutensia-the lasting monument of the University which he founded at Complutum or Alcala, and the great glory of the Spanish press-separates the Apocrypha from the Canonical books. The books, he writes, which are without the Canon, which the Church receives rather for the edification of the people than for the establishment of doctrine, are given only in Greek, but with a double translation.” ( B.F. Westcott, A General Survey of the History of the Canon of the New Testament (Cambridge: MacMillan, 1889), pp. 470-471.)
Isn't that what the Catechism also teaches? If his works while living imitate Christ, then his conversion has begun by them, and may be sufficient for his salvation, provided that the full conversion occurs before death.
The sentence "full conversion occurs before death" certainly does not appear to be part of that catechism of yours, or in your previous statement. In which case, we could not agree more, as certainly, once the Muslim becomes a Christian, then he is saved. Of course, I do not pretend that works in any way, as you do, merit the grace of salvation.
At Jerusalem there was a renascence, perhaps a survival, of Jewish ideas, the tendency there being distinctly unfavourable to the deuteros. St. Cyril of that see, while vindicating for the Church the right to fix the Canon, places them among the apocrypha and forbids all books to be read privately which are not read in the churches. In Antioch and Syria the attitude was more favourable. St. Epiphanius shows hesitation about the rank of the deuteros; he esteemed them, but they had not the same place as the Hebrew books in his regard. The historian Eusebius attests the widespread doubts in his time; he classes them as antilegomena, or disputed writings, and, like Athanasius, places them in a class intermediate between the books received by all and the apocrypha. The 59th (or 60th) canon of the provincial Council of Laodicea (the authenticity of which however is contested) gives a catalogue of the Scriptures entirely in accord with the ideas of St. Cyril of Jerusalem. On the other hand, the Oriental versions and Greek manuscripts of the period are more liberal; the extant ones have all the deuterocanonicals and, in some cases, certain apocrypha.
The influence of Origen's and Athanasius's restricted canon naturally spread to the West. St. Hilary of Poitiers and Rufinus followed their footsteps, excluding the deuteros from canonical rank in theory, but admitting them in practice. The latter styles them "ecclesiastical" books, but in authority unequal to the other Scriptures. St. Jerome cast his weighty suffrage on the side unfavourable to the disputed books... (Catholic Encyclopedia, Canon of the Old Testament, eph. mine)
The Catholic Encyclopedia also states as regards the Middle Ages,
In the Latin Church, all through the Middle Ages [5th century to the 15th century] we find evidence of hesitation about the character of the deuterocanonicals. There is a current friendly to them, another one distinctly unfavourable to their authority and sacredness, while wavering between the two are a number of writers whose veneration for these books is tempered by some perplexity as to their exact standing, and among those we note St. Thomas Aquinas. Few are found to unequivocally acknowledge their canonicity. The prevailing attitude of Western medieval authors is substantially that of the Greek Fathers. The chief cause of this phenomenon in the West is to be sought in the influence, direct and indirect, of St. Jerome's depreciating Prologus (http://www.newadvent.org/cathen/03267a.htm)
More by God's grace.
No Bible, since the Bible became available as a single book, was printed without the Deuterocanon. Deuterocanon is not "apocrypha"; let's not switch topics. Aquinas uses a deuterocanonical book (Sirach 15:14), for example, to show that the Holy Scripture teaches free will: Article 1. Whether man has free-will?. So, no, I am not "just making assertions". That one can find much said also against the Deuterocanon no one has disputed.
"full conversion occurs before death" certainly does not appear to be part of that catechism of yours
Is speaks of an effective conversion prompted by good works does it not? Dead people don't do works.